possible to over filter a tank?

[jeffsz28]

my friend has a 75 with three fish and and they are all about four inches long. he has a skimmer,two 3000 millennium filters and a fluval canister and he has always had a alage problem and he uses reverse osmosis water. is it possible to have to many filters on a tank? he tells me that he does everything right when doing water changes so i can't tell wether hes doing anythng wrong or not.

 

[fshhub]

1st, the tank should be ok with those filters, but i do feel it is unneccessary, a dsb and lr are the best filters you can get IMO, but for fish only it would be fine with these,
how old is his set up, algae growth is normal in all tanks, at certain stages, how is his water quality, this could be a major part of the problem too

 

[krusk]

Does he has a cleaning crew in the tank?

 

[jeffsz28]

thanks guys-well first off his tank is acouple years old. second i think he does his water changes the way i taught him but i'm not there so i have to take his word for it?nope no cleaning crew would last the puffers and trigger would eat them ha ha ha.

 

[predator]

I'm with FishHub.Water quality and over feeding will cause algea growth.How long does he leave his lights on?Aquriums are perfect growing places for algea.Warm temp., Lots of light, Moisture and plenty of food.Look into it a little further and see if correcting any or all of them will help.

 

[broomer5]

One word - PHOSPHATES
Have him test for phosphates, and I bet he has higher than acceptable levels.

 

[kenobi]

Solve prob..
What millinum filter. Wet dry?? Undergravel??
Yes to many filters can create prob.
Remember canisters and other filters can become breeding grounds for organics and Phosphates. Two excellante food for guess what

[hr]
Algae!!!

 

[jeffsz28]

thanks guys i will check into it -thanks -later