GHA outburst 0 phosphates

crazybanana2 · 2026-10-15T19:38:08-0400

Hey guys, currently im dosing neophos at 0.1 ppm for weeks now because i was bottomed out at 0 and had dinos, which has now turned my tank into a gha outburst. I added a uv sterilizer yesterday and I think the dinos are starting to die back a bit, but i cannot fix the underlying issue which was my 0 phosphate. I’ve dosed so much and it still doesn’t raise. My plan is to manual removal the gha and increase my CUC as i only have 2 trochus snails and 2 cerith snails. So maybe a tuxedo urchin? or astrea snails too. I’m wondering if anyone can help guide me, as to raise my phosphate I would have to manually remove and increase the predators for GHA, as that’s whats consuming the phosphate that ive been dosing every night.

Saltyreef · 2026-10-15T20:15:58-0400

How old is the tank?

CHSUB · 2026-10-15T20:20:52-0400

Stop dosing po4! It was never needed….gasoline doesn’t put out fires!

crazybanana2 · 2026-10-15T20:47:06-0400

Saltyreef said:
How old is the tank?

The tank is about 7-8 months old

crazybanana2 · 2026-10-15T20:47:35-0400

CHSUB said:
Stop dosing po4! It was never needed….gasoline doesn’t put out fires!

My phosphate would be bottomed out though

Saltyreef · 2026-10-15T21:48:57-0400

crazybanana2 said:
My phosphate would be bottomed out though

I would not dose anything at the moment and start working on removing the algae by hand during water changes. Do not add anymore lifeforms into the tank. Did you start the tank with liverock or dryrock?

Sam7 · 2026-10-15T22:00:54-0400

there are a ton of phosphates the algae is using it all so your test is not detecting it

Sam7 · 2026-10-15T22:04:00-0400

like said above hand clean that alage from the tank....stop adding liquid of hope....and do water changes when needed and let the tank mature.....in time with patients it will become beautiful

crazybanana2 · 2026-10-15T22:08:09-0400

Saltyreef said:
I would not dose anything at the moment and start working on removing the algae by hand during water changes. Do not add anymore lifeforms into the tank. Did you start the tank with liverock or dryrock?

I started the tank with dryrock.

Sam7 · 2026-10-15T22:14:08-0400

crazybanana2 said:
I started the tank with dryrock.

most of us have....it can be a long road but you can come out with a awesome tank

Saltyreef · 2026-10-15T22:16:52-0400

The issue you are having is usually adherent of tanks started with dry rock. As said above. It will take a long time before you see stability. The substrate and aquascape will bind p04 and your test kits will show low to non existant p04 in water column.