How to clear up green mercky water.

[WyldFya]

Again, killing the algae off all together can cause dramatic ammonia spikes, even lethal ones, depending on how much you have. Chems are never a good choice, as they will take up space in the water that would normally be filled with oxygen. With a raised ammonia level, and low O2, you will see your fish acting strange or even dying.

 

[WyldFya]

Thanks for the reply's. The water chemistry is as follows.
Ph: 7.8
Amm: 0
Nitrates:0
Nitrites:0
tap
Ph:7.2

This tells me that, either you have a astronomical amount of algae, you use some form of nitrate removal, you have a planted tank, or you have a bad test kit. High phosphates cause some alga, but in the case of unicellular alga, the cause is most attributed to excessive lighting.

 

[invisyblegypsey]

i have that problem with indirect light from a windw i use some tin and fixd the problem