SRC Member butteye Posted March 22, 2005 SRC Member Share Posted March 22, 2005 Tested tap water PO4 reading using salifert test kit reads = 0. Then tried on tank water and it reads 0.03. Why like that?? tot tap water shld have high phosphate level?? pls comments.. Quote Link to comment Share on other sites More sharing options...
SRC Member butteye Posted March 22, 2005 Author SRC Member Share Posted March 22, 2005 Anybody did tried he reading of PO4 on tap water before?? need some comments. Quote Link to comment Share on other sites More sharing options...
SRC Member LaW Posted March 22, 2005 SRC Member Share Posted March 22, 2005 never tried that. but i think theress something leaking PO4 into ur tank. Quote If a man could beat his own fantasy. Then to only breed in captivity. Then its pointless. Genesis 1:20 And God said, Let the waters bring forth abundantly the moving creature that has life, and fowl that may fly above the earth in the open firmament of heaven. And God created great whales, and every living creature that moves, which the waters brought forth abundantly, after their kind, and every winged fowl after his kind: and God saw that it was good. And God blessed them, saying, Be fruitful, and multiply, and fill the waters in the seas, and let fowl multiply in the earth. And the evening and the morning were the fifth day. || Tank: 78" x 30" x 30" || Sump: 48" x 22" x 20" || Lights: PowerModule 10 X 80W|| Returns: 2 x HF32 || || Skimmer: BubbleKing Supermarin 300 || Wavemaker: 3 x 6100 & 1 x 6200, 2 x Wavebox 6212, WavySea || || FR: 2 x FR150 || NR: Sulphur Denitrator || CR: RM Custom Made 8" || KR: Deltec KM500 || TopUp: Tunze Osmolator 3155 || || UV: Coralife 12X 36W || Ozonizer: Sanders C200|| Controller: GHL Profilux Plus II Ex || Link to comment Share on other sites More sharing options...
SRC Member butteye Posted March 22, 2005 Author SRC Member Share Posted March 22, 2005 Tot PO4 is external chemistry instead?? Quote Link to comment Share on other sites More sharing options...
SRC Member LaW Posted March 22, 2005 SRC Member Share Posted March 22, 2005 read somewhere that some carbon used leaks PO4. and some stuff you added into the tank might contain PO4 too. Quote If a man could beat his own fantasy. Then to only breed in captivity. Then its pointless. Genesis 1:20 And God said, Let the waters bring forth abundantly the moving creature that has life, and fowl that may fly above the earth in the open firmament of heaven. And God created great whales, and every living creature that moves, which the waters brought forth abundantly, after their kind, and every winged fowl after his kind: and God saw that it was good. And God blessed them, saying, Be fruitful, and multiply, and fill the waters in the seas, and let fowl multiply in the earth. And the evening and the morning were the fifth day. || Tank: 78" x 30" x 30" || Sump: 48" x 22" x 20" || Lights: PowerModule 10 X 80W|| Returns: 2 x HF32 || || Skimmer: BubbleKing Supermarin 300 || Wavemaker: 3 x 6100 & 1 x 6200, 2 x Wavebox 6212, WavySea || || FR: 2 x FR150 || NR: Sulphur Denitrator || CR: RM Custom Made 8" || KR: Deltec KM500 || TopUp: Tunze Osmolator 3155 || || UV: Coralife 12X 36W || Ozonizer: Sanders C200|| Controller: GHL Profilux Plus II Ex || Link to comment Share on other sites More sharing options...
SRC Member 35Cents Posted March 22, 2005 SRC Member Share Posted March 22, 2005 Law is correct. In fact all carbon does leaches PO4, just need to find one that leaches the least. In addition, frozen food like BS and MS does contain a small amount of PO4 too if I'm not wrong. Some reefers here wash the food after it thawed to rid it. But a bit funny, data from PUB stated PO4 is <0.1... always know that a certain amount is in tap water.... where u stay? You must be lucky to get PO4 free tap water source from one of the reservoirs here. Quote "Ah, Blackadder. Started talking to yourself, I see." "Yes...it's the only way I can be assured of intelligent conversation." - Melchett and Edmund Blackadder Link to comment Share on other sites More sharing options...
SRC Member minsmarine Posted March 23, 2005 SRC Member Share Posted March 23, 2005 Tested Hougang's Tapwater for past 5 months ( like every 2 weeks ). Here are average reading. NO2 - 0 NO3 - 0 PO4 - 0 All test kits salifert. Quote Life is like a peice of Uncured Live Rock [ from LFS ], you never know what you gonna get......... Ocean Gump Link to comment Share on other sites More sharing options...
SRC Member butteye Posted March 23, 2005 Author SRC Member Share Posted March 23, 2005 Law is correct. In fact all carbon does leaches PO4, just need to find one that leaches the least. In addition, frozen food like BS and MS does contain a small amount of PO4 too if I'm not wrong. Some reefers here wash the food after it thawed to rid it. But a bit funny, data from PUB stated PO4 is <0.1... always know that a certain amount is in tap water.... where u stay? You must be lucky to get PO4 free tap water source from one of the reservoirs here. Haha, me staying sengkang. Maybe some other bro from sengkang can test their PO4 and verify?? Quote Link to comment Share on other sites More sharing options...
SRC Member minsmarine Posted March 23, 2005 SRC Member Share Posted March 23, 2005 LR can leek PO4. Like my LR keep leeking PO4, slowly but surely. Because , I didn't have a good skimmer in early day. Quote Life is like a peice of Uncured Live Rock [ from LFS ], you never know what you gonna get......... Ocean Gump Link to comment Share on other sites More sharing options...
weileong Posted March 23, 2005 Share Posted March 23, 2005 It's not that the tap water is PO4 free but it is below the detection limit of the salifert test kit and/or how the tester's eye can see the very slight blue color I had compared the Salifert PO4 test test using high sensitivity mode and hanna PO4 meter. The salifert test kit shows undetectable PO4 (looks colorless to my eyes) while the hanna PO4 meter shows 0.1ppm. Quote Weileong's 4ft tank Part I Weileong's 4ft tank Part II Link to comment Share on other sites More sharing options...
lightningstrike Posted March 23, 2005 Share Posted March 23, 2005 Tested Hougang's Tapwater for past 5 months ( like every 2 weeks ). Here are average reading. NO2 - 0 NO3 - 0 PO4 - 0 All test kits salifert. abt time i move to hougang. Quote Austin the Westie: "I may be your best friend, but you are my everything". Lightning Strike's Back!!! Reefkeeping Is Not My Hobby, It's My Obsession. Austin's Birthday Link to comment Share on other sites More sharing options...
SRC Member minsmarine Posted March 23, 2005 SRC Member Share Posted March 23, 2005 sound like I tested water for you to move in haa haa Would be glad if you could move in near to my house. So we got more partnet to go LFS and help each other Weileong, Yes I agree with you. Forgot to mention that And ... Razak told me you have that meter. Quote Life is like a peice of Uncured Live Rock [ from LFS ], you never know what you gonna get......... Ocean Gump Link to comment Share on other sites More sharing options...
SRC Member Reefbum Posted March 23, 2005 SRC Member Share Posted March 23, 2005 Read somewhere that every living things has P04.Maybe thats why P04 can come from the LR,LS food, etc.Anyone can confirm this? Quote Link to comment Share on other sites More sharing options...
SRC Member madmac Posted March 24, 2005 SRC Member Share Posted March 24, 2005 Your very right Reefbum. No living thing can exist without P. Its is everything organic, esp. plant matter. I came across a sign board in a pasar malam stall selling raw Japanese seaweed, it specifies the nutritional % of the minerals, and it says for P is somewhere in the order of 84%... bananas is another high P. fruit, sources of quick energy. For the reef world, P is seldom found in areas where water is very clear, they are found to be very high near the mouth of estuaries, river beds. Two impt. points about PO4 is that, there are water soluble PO4 and organic(solid) PO4... what most of us test for is water soluble PO4... which is rather incorrect... as it doesn't give a true picture of the PO4 in the tank.. Organic PO4 is efficiently stored in the DSB(for a while, maybe as long as months and years sometimes depending on teh size) and in algae and other organic life forms, bacterial detritus etc and to get the true picture, is extremely difficult... The organic P once broken down will become water soluble P, which is what we test for.... so any value higher than 0.03 is sometimes considered very very high. The easy test of organic PO4 is your very own eyes... if you see hair algae, cyano, etc.. you'll know that the PO4 is very high... depending on what you keep, you may be content, eg anemones, mushrooms, some softies. Hard corals seldom can tolerate P, most will stop growing after some time and just die. mins right too, LRs do leak out PO4, they do so because they run out of space to store them as space in the LR are much limited when compared to DSBs... but not "slowly and surely"... it is more immediate, while DSB give you a false hope that PO4 is low, slowing building up over time. Ask yourself what you are keeping first and to determine if they are PO4 tolerant, if they are then theres not much you'll need to worry abt... Quote Link to comment Share on other sites More sharing options...
SRC Member shoelevy Posted March 25, 2005 SRC Member Share Posted March 25, 2005 hi madmac i'm interested in finding out what happens when both the DSB and LR become saturated with po4 after a looong time and cannot store them anymore...both the rocks and DSB will leach po4? is this the time when po4 removers are critical in removing the leached po4 and po4 introduced through feeding? paiseh but one more question...does a good skimmer help in controlling po4 levels? thank you! Quote Link to comment Share on other sites More sharing options...
SRC Member butteye Posted March 25, 2005 Author SRC Member Share Posted March 25, 2005 Your very right Reefbum. No living thing can exist without P. Its is everything organic, esp. plant matter. I came across a sign board in a pasar malam stall selling raw Japanese seaweed, it specifies the nutritional % of the minerals, and it says for P is somewhere in the order of 84%... bananas is another high P. fruit, sources of quick energy. For the reef world, P is seldom found in areas where water is very clear, they are found to be very high near the mouth of estuaries, river beds. Two impt. points about PO4 is that, there are water soluble PO4 and organic(solid) PO4... what most of us test for is water soluble PO4... which is rather incorrect... as it doesn't give a true picture of the PO4 in the tank.. Organic PO4 is efficiently stored in the DSB(for a while, maybe as long as months and years sometimes depending on teh size) and in algae and other organic life forms, bacterial detritus etc and to get the true picture, is extremely difficult... The organic P once broken down will become water soluble P, which is what we test for.... so any value higher than 0.03 is sometimes considered very very high. The easy test of organic PO4 is your very own eyes... if you see hair algae, cyano, etc.. you'll know that the PO4 is very high... depending on what you keep, you may be content, eg anemones, mushrooms, some softies. Hard corals seldom can tolerate P, most will stop growing after some time and just die. mins right too, LRs do leak out PO4, they do so because they run out of space to store them as space in the LR are much limited when compared to DSBs... but not "slowly and surely"... it is more immediate, while DSB give you a false hope that PO4 is low, slowing building up over time. Ask yourself what you are keeping first and to determine if they are PO4 tolerant, if they are then theres not much you'll need to worry abt... Thanks, Very insightful. then what if those going for BB tank, wouldn't it deprive those organic P with lesser time/space to house before eventually turns to soluble P?? Quote Link to comment Share on other sites More sharing options...
SRC Member madmac Posted March 28, 2005 SRC Member Share Posted March 28, 2005 Yes, theres lesser time for LRs to store, due to space constraints... and that is THE WHOLE IDEA of using a BB... because you don't want to store thing nutrients... you'll have to find another way to export them...quick... real quick, the quickest way is to remove them before they even breakdown... shoelevy, the PO4 removers will be useless when that happens... because the breakdown is continuous and soon the PO4 removers will be exhausted... they absorb really fast though but only remove PO4... I think it can be efficient (plenty of flowthru relative to tanks).... and effective (your tuning). Quote Link to comment Share on other sites More sharing options...
SRC Member weisoon Posted March 28, 2005 SRC Member Share Posted March 28, 2005 Two impt. points about PO4 is that, there are water soluble The organic P once broken down will become water soluble P, which is what we test for.... so any value higher than 0.03 is sometimes considered very very high. All or almost all test kits test only for inorganic PO4. Organic PO4 is very difficult to test unless done in the lab. Quote Link to comment Share on other sites More sharing options...
SRC Member madmac Posted March 28, 2005 SRC Member Share Posted March 28, 2005 Hi weisoon, .... the alien is back...i haven't seen you around here for sometime.... yup thats what I meant... by test kits measuring water soluble PO4... theres no such thing as 'inorganic PO4'... they're so so organic... it can't be anymore inorganic... Quote Link to comment Share on other sites More sharing options...
SRC Member cjh Posted March 28, 2005 SRC Member Share Posted March 28, 2005 abt time i move to hougang. u sounds like u live in the water... Quote Link to comment Share on other sites More sharing options...
SRC Member SBS_Transit Posted March 28, 2005 SRC Member Share Posted March 28, 2005 Tested Hougang's Tapwater for past 5 months ( like every 2 weeks ). Here are average reading. NO2 - 0 NO3 - 0 PO4 - 0 All test kits salifert. i second that Quote SBS_Transit Link to comment Share on other sites More sharing options...
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