How to maintain stable temp with Resun CL450?

[lesjack]

Hi reefers, I need some advice from anyone with experience in setting the temperature for Resun CL450. Did some reading for the past few days and found that some reefers are able to maintain a stable temperature of 25 or 26 degrees using chillers...hence went to get one. Came back and had lots of difficulty maintaining the temp...how is one going to maintain temp if the chiller kicks when the water temp is 2 degrees above the 'set' temp? Does quite make sense to me?? If I set it at 26 degrees, the chiller is capable to cool the water down to that temp in less than 30mins (3feet tank only), shuts off until the water temp goes up to 28 degrees before starting up again. Is this fluctuating temperature alright...thought suppose to maintain stable temp?? Please help or advice. Thank You.

[strat]

Do you have an external digital thermometer in your tank?

Maybe you can tell us what is the measured temperature.

Also How long does it take before your chiller starts to work again?

[Eric]

Hi reefers, I need some advice from anyone with experience in setting the temperature for Resun CL450. Did some reading for the past few days and found that some reefers are able to maintain a stable temperature of 25 or 26 degrees using chillers...hence went to get one. Came back and had lots of difficulty maintaining the temp...how is one going to maintain temp if the chiller kicks when the water temp is 2 degrees above the 'set' temp? Does quite make sense to me?? If I set it at 26 degrees, the chiller is capable to cool the water down to that temp in less than 30mins (3feet tank only), shuts off until the water temp goes up to 28 degrees before starting up again. Is this fluctuating temperature alright...thought suppose to maintain stable temp?? Please help or advice. Thank You.

2 degrees differencial is ok wat.......

[lesjack]

Do you have an external digital thermometer in your tank?

Maybe you can tell us what is the measured temperature.

Also How long does it take before your chiller starts to work again?

Yes, I have this black long digital thermometer called something...fishes. can't remember the brand and is suppose to be quite accurate. The reading of this thermometer is different from the reading from the chiller. That can be solved by setting the CL (calibration) - currently set to -1 (i.e. if tank reading is 26, chiller will read 27)

Chiller will kick in after about one plus hour..thats the time taken to bring the temp up by 2 degrees.

[lesjack]

2 degrees differencial is ok wat.......

Ok..just not sure if that 2 degree fluctuation multiple times in a day is alright with my corals. Though i'am the only one with this problem...paiseh

[strat]

It's normal bro!

[Nautical]

i am also using a Resun CL450 with two degrees differential.

unfortunately it seems to kick in within twenty minutes between each cycle, that is, from one kick in to the next.

any advice why it kicks in so frequently, as compared to lesjack's one hour interval ??

main tank temperature before using chiller range from 30 to 31 degrees.

[yus75]

i am also using a Resun CL450 with two degrees differential.

unfortunately it seems to kick in within twenty minutes between each cycle, that is, from one kick in to the next.

any advice why it kicks in so frequently, as compared to lesjack's one hour interval ??

main tank temperature before using chiller range from 30 to 31 degrees.

bro most of us have different tank volume, heaitn n coolin will diff from each of us......other factors to b consider too..... ie pump in the water(total watt i meant),

heat from ur lighting....eg 1 150w vs 2 250w......n other things too..

[lesjack]

i am also using a Resun CL450 with two degrees differential.

unfortunately it seems to kick in within twenty minutes between each cycle, that is, from one kick in to the next.

any advice why it kicks in so frequently, as compared to lesjack's one hour interval ??

main tank temperature before using chiller range from 30 to 31 degrees.

Hi, my initial tank temp without chiller is 28 to 29 degrees. Takes a much longer time to reach up to 28 degrees (actually 27.5 on the digital thermometer) for the chiller to kick in...guess that might be the reason. At night can take up to 3 hours when lights are off before temp goes up to that level, so chiller takes a longer break. I dont use MH too.

[Nautical]

Hi, my initial tank temp without chiller is 28 to 29 degrees. Takes a much longer time to reach up to 28 degrees (actually 27.5 on the digital thermometer) for the chiller to kick in...guess that might be the reason. At night can take up to 3 hours when lights are off before temp goes up to that level, so chiller takes a longer break. I dont use MH too.

u lucky man, kick in between one to three hours. how you managed that ? like i said, mine is about every fifteen minutes. i don't use MH.

are the inlet hose and outlet hose inside the tank close to each other ? wonder this makes a difference.

[strat]

u lucky man, kick in between one to three hours. how you managed that ? like i said, mine is about every fifteen minutes. i don't use MH.

are the inlet hose and outlet hose inside the tank close to each other ? wonder this makes a difference.

Definitely. You are suppose to keep the inlet and outlet hose as far as possible.

Preferably, your outlet should go back into your main tank if you are using a sump.

[lesjack]

u lucky man, kick in between one to three hours. how you managed that ? like i said, mine is about every fifteen minutes. i don't use MH.

are the inlet hose and outlet hose inside the tank close to each other ? wonder this makes a difference.

I connect the return pump to the chiller and then the output of the chiller to the main tank, goes through one full loop before coming back down to be taken up by the return pump. I guess the strong winds blowing into my flat from the service balcony is in line with my tank area. Constantly well ventilated...tank was without chiller and doing fine with one fan for 6 months but with the heat wave these days, bopian need to get chiller.