Cyano problems! again

[karsseboom]

So i have been battling cyano problems for a while thinking it might go away but its not. Its growing everywhere even in the phosban reactor...lol My water has low p04 zero on the hanna meter and the nitrates have never been above zero. I have been running gfo 24/7 since i started the tank and have cheato in my refugium. Corals are growing great and there olny 2 clowns in a 60 gal. Running 2 250 watt mh for 6 hours and the actinic come on before the mh so they run about 9 hours. So whats up? could it be i need to change water more often?

 

[Bigcefa]

This is what you do

Step 1 : Go to Local Fish Store and buy chemi-clean
Step 2 : Go Home and siphon out as much cyano as you can
Step 3 : Add new water and then dose your chemi-clean ( turn off protein skimmer, no Carbon etc)
Step 4: 2 days later when all your cyano is gone do a 25 % water change and then turn back on skimmer and such, if still cyano you can do another dose but make sure you still do the water change
Step 5: Thank me

Your test results could be false reading because your Po4 and No3 are getting used up by the cyano and algae so fast your test kits wont read it just assume you have it try to find the source just a thought but you may actually have no P or N but either way do the chemi clean the stuff works and wont hurt anything in your tank

 

[Reefahholic]

i would siphon as much as you can like he said, and then do big water changes.

 

[needmore-reef]

cyano stinks.

Strange that your getting cyano growth with zero phosphate reading from an accurate meter.

have you tested your RO/DI water for evaporation replacement?

 

[gooberz]

In my Experience the cause of cyano is lack of water flow. You might want to increase your water flow.

 

[kissman]

have you check the TDS coming out of your RO/DI?

 

[disc1]

Strange that your getting cyano growth with zero phosphate reading from an accurate meter.

Not strange at all. The cyano are really good at stripping any available P or N from the water. So you will almost never test phosphates if you have a lot of cyano. They are eating it up as fast as it gets into the water. If you remove the cyano with chemi-clean or red-slime-remover, it will just come back unless you also address the root cause. You will have to find the source of the nutrients, phosphat and nitrate.

It's kinda like testing the Simpson household for donuts. It doesn't matter how many you are throwing into the window, you'll never find them in the house cause Homer eats them all faster than you can put them in.

 

[Reverend Reefer]

its true. that what sucks about phosphate testing. you know you have it but it gets eaten up by the cyano. for example, my cheato grows like crazy so i know that i have phosphates but whenever i test for phosphates its never there.

i would look into the 2 things people have already suggested: 1) add more flow, 2) check your ro/di water. how long has your tank been up and running? i had cyano problems for the 1st year, it is an annoying battle. i still see it from time to time but only in particular dead spots with less flow.

 

[disc1]

The most accurate phosphate test in the world:

Step 1: Look in tank
Step 2: If you see algae or cyano, you have excessive phosphate