Quote:
Originally Posted by
trkoi 
I'm new to this forum.
I just built the new pond for 3 wks. The water was clear until a friend of mine told me not to turn on the UV so the algae can grow quicker. I did that and now the water turned green. It's too green that I can't see the koi. I checked the pH and it went up to 8.4+ from 8.0. I saw couple of koi flashing and jumping up the water.
What should I do?
many thanks in advance.
trkoi