lando
Aquarium Advice Addict
Hi all...I have recently had an outbreak of cyno. Tested tank P04 and found it to be .5. I use RO/DI water and tested that and it came back at barely a .1 (using Red Sea test kit). I have been running Phosguard by Seachem for the last few days and P04 in tank is now at .3. So I do not think my RO/DI water is the problem. What else can cause an increase in P04? Thanks! Lando