It's back again...

[Marine430]

I have no idea what is going on... this problem started back in February. I have tried vibrant, microbactor7, small water changes, syphon the sand, rowas, chemipure blue, I spent 200 dollars on a skimmer. I was told diatoms, I was told dinos, and recently told cyano, and I tried chemiclean.
From February

From Saturday

 

[piranhaman00]

Post nutrients, do you use RODI?

 

[Marine430]

I recently did a chemiclean treatment per lfs. They said if it goes away at night it's dinos, if it doesn't then cyano. Water test was 5 nitrates, 0 phosphate

 

[Marine430]

Post nutrients, do you use RODI?

Always Rodi from wwc, 5 nitrates, 0 phosphate

 

[piranhaman00]

Its green correct? how do you test phosphate?

 

[Fishyfish22]

How old is the tank?

 

[Marine430]

Its green correct? how do you test phosphate?

Definitely green. I have a hanna checker, also salifert. Lfs used api.
Hanna checker was 0.19

 

[Marine430]

How old is the tank?

3 years old.

 

[Marine430]

I was told to add more flow and this is how it reacts

 

[Marine430]

Well I suppose I will syphon the algae off the sand again. I don't know what else to do?

 

[Reefman71]

I’m in the same boat. Zero phosphate and .05 nitrate. Cyano is everywhere. I increased my flow, that did nothing. I just dosed chemiclean.

I was told to add more flow and this is how it reacts
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