QT green water

FullSend · Nov 12, 2021

My QT tank sits next to a window and with the changing season more light was hitting the tank. This caused a green water bloom in the tank. I covered up the window and did a 30% water change last night.

Will a three day black out get rid of the green water?

blaxsun · Nov 12, 2021

You can always give it a try.

FullSend · Nov 19, 2021

Well the black out didn't work. I didn't get the tank 100% blacked out so maybe it would have worked. Currently I'm more concerned with making sure all the fish get fed. So I'll accept the green water for a while longer.

I ordered the green killing machine and I'll try that out in the next week or two. Plus it can't hurt to have a UV on the shelf.

vetteguy53081 · Nov 19, 2021

You can use black construction paper from Walmart school section (92 cents ea, , 30" X 24") and tape at area where light is allowed to hit tank. UV rays are very strong and will penetrate shades and blinds

Garf · Nov 19, 2021

FullSend said:
Well the black out didn't work. I didn't get the tank 100% blacked out so maybe it would have worked. Currently I'm more concerned with making sure all the fish get fed. So I'll accept the green water for a while longer.

I ordered the green killing machine and I'll try that out in the next week or two. Plus it can't hurt to have a UV on the shelf.

New tanks get all sorts of weird things going on. UV is a good investment.