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Zoanthids melting and sky high nitrates

TripleTruble

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Hello,

so my zoas are slowly melting and I have no clue what caused it. I have had an algae issue I am trying to overcome as well. This is a 54 gal corner with sump. Lights are 2 kessil a360x.

ammonio 0
nitrite 0
nitrate 100+ !!!
phosphate .74
temp 78.1
pH 8.0
 
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NS Mike D

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we are helping with a diagnosis which means ruling out things, so keep the answers coming (go through to attend to the ones that are still open),

Along this lines is a chemical/toxic event. Any possibility of something airborne that got into the tanks like a carpet cleaner etc.

Also what other corals do you have? Corals can release toxins in their ongoing turf wars. Do you use activated carbon ? Activated carbon removes toxins .
 
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NS Mike D

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Id suggest some water changes. Get the NO3 and PO4 down.

maybe cut back on feeding a little too... something going in isn’t getting out
if this was a nano tank, I'd recommend a full water change. at 54g, I'd start making/buying water and doing some major water changes while getting whatever algae remains, and if not a new tank, clean the sand bed in the process.
 

NS Mike D

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This tank is about 4 months old. 4 fish 14 corals a cucumber an emerald crab and a fire shrimp
what type of alage issue and what were you doing (if any to deal with it)

It's a new tank which will have different approaches than a mature tank

what test kits are you using for NO3 and PO4. Let's nail down the accuracy of the reading


if correct. you NO3 and PO4 export/uptake is not sufficient.
 

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