Help! Black And Yellow Crystals Appearing In Water

[anokaina]

Hi all reefers!

Something weird just happened in my tank like 2 hours ago, I saw quite a few small, black and some yellow crystals just appearing in my tank!

Ratio of black to yellow in terms of quantity is 9 : 1

Corals and fish seem normal...

But the black and yellow crystals are an eyesore and I was worried that overnight, disaster might happen?

Any one can tell me what that is?

Thanks guys!

Oh, some of my tank details

My tank specs:

1XFL zoomed 10k 12 hour lighting per day

1XFL zoomed actinic same

hang over filter(quite big), denitrate by seachem, chemipure

2 feet tank...those round front edges type

4 inch DSB

tank cycled for a month...now is 2 months+old

liverock 10+kg

some mushies, leathers, star polyps, tube worms...

fish inside:

puffer from brackish waters, yellow with black spots

purple dottyback

orange shrimp goby

scorpion blenny

3 clowns

1 cleaner shrimp

1 blood shrimp

2 camel shrimp

2 snails

2 bubble tip anemones

i think thats abt it

temp ard average of 26 degrees

SG 1.022-23

ammonia 0

nitrite 0.5

nitrate below 10

Ca 400ppm

[Terryz_]

could be salt...

[Terryz_]

BTW why your nitrite so high.... shld be 0 wat...

[anokaina]

hi terryz...

typo...nitrite is 0...thanks

and i dun think its salt man....

thanks anyway ah...

anyone else can help?

[Achilles Tang]

Did you do anything to your tank prior to this 'appearances'.

Do they sink or float?

Did your sister come home from a party and left 'fairy dust' in the room?

[[whale]]

puffer from brackish waters, yellow with black spots

Maybe they are the spots that fell off the puffer?

But seriously, could it be some kind of filter media that broke out from your filter?

[anokaina]

Hi ...thanks for the replies...

I checked...my bags holding filter media are tightly secured...

Only things, I have dosed are calcium and strontium...

The black and yellow particles sink to the sand bed, I have sucked most of them off, but I believe that they are still some in between the rocks...

Fish and corals look pretty alright today...normal...

[Tanzy]

Check the chemipure bag again. It sounds like the black carbon and yellow resins found in the bag.

[FuEl]

Check whether you might have overdosed calcium or scrontium? I'm just making a guess..the yellow and black crystals sound abit towards iron or iodine based.

Maybe there is some ionic imbalance in your water causing certain ions to precipitate out?

[SpiderOne]

thats a good one .

[Sinn]

!

[flubberina13]

Check whether you might have overdosed calcium or scrontium? I'm just making a guess..the yellow and black crystals sound abit towards iron or iodine based.

Maybe there is some ionic imbalance in your water causing certain ions to precipitate out?

Chemistry student?

[SpiderOne]

What sch?

[FuEl]

I talking nonsense only lah...now in some chap pa lang uni.....making me more stewpig....

[SpiderOne]

woah. i thought u 15 years old ??

[Tanzy]

Scrontium sounds like a good material for balls.

Iodide salts won't be precipitated in the saltwater tank. If it did, the water will be brown and everything will be dead and bleached white.

Iron maybe, not from ppt but from rust.

[flubberina13]

Scrontium sounds like a good material for balls.

Iodide salts won't be precipitated in the saltwater tank. If it did, the water will be brown and everything will be dead and bleached white.

Iron maybe, not from ppt but from rust.

FuEL STUDIES chemistry...

Tanzy TEACHES chemistry...

[SpiderOne]

yea Tanzy is the best teacher.During tests i can always call him and count on him to give me the answers .

[FuEl]

If I 15 my pocket $$ only $20 a week...how to keep marine? I 21 liao....old man liao...

[SpiderOne]

thats so pretty hard to believe that u are older than me. my god

[Tanzy]

yea Tanzy is the best teacher.During tests i can always call him and count on him to give me the answers .

But you are such a loooooser that you failed your test even cheating with the right answers.

[FuEl]

thats so pretty hard to believe that u are older than me. my god

HAhahaa....okok..at least I don't feel so old now!

[SpiderOne]

But you are such a loooooser that you failed your test even cheating with the right answers.

I also dunno how i fail.. i think the section B i screwed up something. its a 20 mark test man.. screw up 2 questions behind and fail le.. the MCQ dunno why supposed to get all right man.. are u sure u werent so sleepy that u gave me wrong answers

[anokaina]

ladies and gentlemen i think some of u went off topic

aahhaha

nevermind

my tank looks stable so far

thanks