Hi all
I've got a problem I hope someone can help with. About 10 days ago I noticed my tank was starting to go cloudy all of a sudden. I was going on holiday the next day so I did a water change quickly. Got home today and my tank was completely green - so green in fact that I couldn't see a single thing in it. My hubby was feeding the fish while I was away and he had told me it was getting worse and he knows not to over feed them. So at a loss for what else to do, I have since emptied the tank completely, got all the fish into another tank (they are all fine) and I'm going to start again. Couple of questions though
1. Why did it suddenly go green? Tank has been set up since July 2004 with no prior problems.
2. Are ug filters the best option or is there something better? When I cleaned the tank there was a lot of muck under the plates even though I do regular water changes
3. Should I get new gravel as if there was a bug of some sort that caused it, it may happen again if I use the same gravel.
I know I will have to cycle the tank again before re-introducing the fish
It is a 240 ltr tank so I don't want to have to empty it right out too often.
Any suggestions gratefully appreciated.