Algae id!!!!!!!!!!!!!!!!!!

[chris88]

It has nothing to do with t5's. It’s simple biology. If there is an excess of nutrients and algae is present it will grow. test kits are useless because the algae is going to grow in relation to how much nitrates and phosphates are in the water, thus giving you zero or low readings anyways. Do all of the common sense things, feed less, more water changes, bigger skimmer, run a carbon source, etc. Nothing that would eat it would make a difference either, because it will just grow back unless you cut off the source. Try reducing your photoperiod and run a bit more blue light, but in the end you have to get rid of the extra nutrients or find a way to export them.