I have a custom made 75gallon(255 liter ) hexagon tank. it houses 2 Oscars (7in) , a Red Devil (5 in), and a Pleco (8in). It is constantly cloudy. I do weekly partial changes 25-40 %. And there is enough filtration for 3 times the size of this tank. "WHAT IS GOING ON?" Is there any remedy?

Your tank is too small for all those fish. The remedy is to rehome most of them

how high is the tank? could be that it has an insufficient surface area for adequate oxygen exchange. overstocking sounds right. what filter are you running?

I agree with the above - it is overstocked. What you are seeing is billions of bacteria in the water. Time for a much bigger tank, or re-home the fish.

I was told 75 gallons was sufficient for the 2 Oscars... Would rehousing the red devil and pleco solve my problem? I really cant afford a larger tank right now. not to mention I have 9 running in an apartment already.

It will house the oscars alone. Is the tank higher than it is wide? Surface area is important and oscars need room to swim widthwise.

I was told 75 gallons was sufficient for the 2 Oscars...

It is, provided the tank is 4' long and 18x18" wide/high. What are the dimensions of the tank? 3 times filtration isn't very much, with big messy fish like oscars you should aim for more like 10x per hour.

And re-housing the red devil would be a good idea, at 5" s/he is getting close to puberty, and once mature will need at least a 75g for himself or he'll shread the oscars.

the tank is higher than it is wide.. the dimensions are all wrong.. go figure... Guess i will have to rob a bank and get rid of the furniture..

yup i need to do the same :roll: but atm my tank is alright as my fish are small but i have to start thinking about getting rid of my cichlids

I was told 75 gallons was sufficient for the 2 Oscars... Would rehousing the red devil and pleco solve my problem? I really cant afford a larger tank right now. not to mention I have 9 running in an apartment already.

I think you could get away with the 2 Oscars and a Plec - I have a breeding pair of Oscars and a Rusty Plec in a tank that is about 65 USG, but they have a 5 x volume/hour filter and still get 90% water changes a week.

that makes me hopeful onch. I really don't want to get rid of them. They started the whole fish keeping bug. I was warned they would get big. just not how fast. I went from 1 tank to 9 in under a year. from the 75 gallon tank they are in now. all the way down to the 10 gallon They came home to. I am going to the LFS store now to price some tanks. Maybe I will find a deal... wish me luck. if adding a 10th is luck :-?

GOOD LUCK WITH FINDING A NEW TANK

No luck finding a new tank. I am gonna do some shifting and moving and see how that goes. :evil:

Jalil30 have you had a look at online auction sites in USA as we have tradme in new zealand..... what do you have over there because you might find a fully set up tank 4 a good price

Ebay FTW, perhaps try the for sale section of US websites like monsterfishkeepers.com or oscarfish.com

I found one on "Craigslist" ... 125 gallons. Now they will have to have company...

so u have a new tank?