This Bigger Tank Is Stumping Me Help!

webjen

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Hello All,
If anyone has any insight I am so appreciative. After almost 24 years of keeping aquariums, I might just give up soon. I had never had anything bigger than a 30-gallon, and about 8 months ago bought a 65-gallon tank. No matter what I try, I cannot get this thing to stay happy. I don't know if there are different tricks for a bigger tank? I have live plants, and have been keeping live plants for 10 years (in fact, most of my Anubias plants are 9-10 years old). I have a fine substrate at the bottom (maybe it's too shallow? only 1 or 1-1/4in deep). I have a double Bio wheel filter. I keep the temp around 80 degrees. I have a circulation pump in the far corner becuase I had this dead zone where debris would settle. I have a piece of Mopani wood. I keep mostly tetras (neons, phantoms, bloodfin, serpae). I keep getting occassional fish death with no signs of disease, some new, some old fish. I cannot get rid of the debris that settles on the bottom (mostly poop), and have never been able to keep scum-eaters like Cory Cats alive for more than 2-3 days (why?). I cannot keep grasses alive, they rot and/or fall apart. It seems I have the best success with slow-growing plants, but try to mix the slow and fast growers in the tank to help nutrient uptake. I have a prolific problem with brownish rusty algae that I've never had in a smaller tank, and I can't get rid of this stuff. I increased light time to about 11-12 hours, I clean the tank almost every week at this point becuase of the debris and algae, and the kicker is that my water always always tests out perfectly (neutral pH and hardness and kH, no ammonia, nitrate, nitrite, no chloramines etc). I am so frustrated! Maybe I'm getting my fish from a store that gets poor quality fish? It's the best I've found within 15 miles though. HELP! I don't want to give up! Any ideas? Thank you thank you!
Jen
Grayslake, Illinois, USA
 
I would expect there to be some nitrates in the water. It could be possible you're getting the fish from a bad source.
Though I dont really know, you've been fish keeping longer than me, so I'm not sure if Ill be of much use.
 
Ahh, Grayslake, about an hour n.w of me. Are you on City of Chicago water? It seems to me that they have been dosing the snot out of it with chlorine & chloramine, try doubling up on water treatment if you are on city water. 65 gallon tanks are deep tanks, and while I don't do plants at all I know you will need some higher wattage lights to get through 24" of water. Corys are prone to infections from dirty substrate, if the deteriorating plants are making a mess out of the gravel this could be the cause. Corys do like it cooler, and bacteria do grow faster at higher temperatures, so this may add in to the cory problem.

A couple of questions; what are you using to treat the water, and what are you feeding?
 

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