green water

See picture. I found some folks on eBay selling daphnia and wonder if I should give that a go.

I have been trying to resolve a terrible tank crash for several days now.  Nothing I've done seems to help at all.     **What is happening: within 2-3 days after a partial (~10gal) water change my water went from pH 6.2, kH 1, ammonia 0.25, nitrite 0 ... to pH 6.6, kH 1, ammonia 1-2, nitrite...

Hi! So, I've recently been having a problem in my tank with very murky green water. I had it a couple months ago, but it eventually miraculously went away, then now it's slowly come back. As you can see in the picture below, my water is seriously murky, and my tank looks pretty bad. So, I...