Advice please! Floating algae becoming a problem

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stewy781

Feeder Fish
MFK Member
Feb 13, 2007
9
0
0
Winnipeg
Hello everyone,
I have two stingrays a humerosa and a motoro, approximately six inches in diameter each, in a 75 gallon tank. We have had floating green algae for about two weeks now and it's not going away!
The tank is in a hallway, but does not get direct sunlight on it. We have a Fluval 405 canister filter, and a sponge filter in the tank. The lights are off for approx 20 hours a day right now, and the light bulbs are blue LED lights. We are doing 25% water changes every two days. The nitrates in the tank spiked over 40ppm, and I added Nitrate Remover to the canister as well as Chemi-Pure, however the nitrates haven't come down, and the algae is getting worse.
I am reaching the end of my rope on this one!

Someone please help me!:cry:
 
Age some water ( 75 gallons worht) for 24 hours and bring to current tank temp. Do 100% water change and clean out all your filters with non chlorinated water. Make SURE you age the water for 24 prior to w/c. and make temp is the same. Are you adding anything to your water ( chemicals etc... additives?
 
Um, I am using 2 packs of carbon, FLuval brand Nitrate Remover, and Chemi-Pure in the canister filter. Once a week, I put in a cap of Prime, and with every water change, I am using tap water conditioner. My concern is this: I (not knowing what I was doing at the time) did a 75% water change, and the guy at the pet store said it is dangerous to do that (I had emptied all but enough for the stingrays to survive). The guy told me that it will shock them to do that kind of thing. Or is this a better idea:I have a 10 gallon that I could put them in for a day or so with their normal water, and when the time comes, put them in a transfer bag, and add a cup of water every twenty minutes like when we brought them home... Does that sound like a plausible idea? If so, maybe we will try the complete water change.
 
10 GALLON your rays will die very soon. Do not add any "conditioner" prime is ALL you need my friend, nothing more. Chemi pure is great stuff, stay away from carbon unless you change carbon every 7 days.
Chemi pure is good for 3 months, but with rays change every 6 to 8 weeks, rays produce more waste.
 
You can put them in a 10 gallon for a few hours with an airstone, just be carfull. Use the water that their in now to fill the 10 gallon.
Few hours though.........
Make sure your temp is the same and de-chlorinated with prime.
Take your time and be carfull. The other alternitive is run your lights for 12 hours a day on a timer and do small daily water changes, this take awhile.
There are other methods, but above is the easy way.
As long as your temp is the same and water is aged and de-chlorinated you should be fine.
 
that's the same problem I had in my 215 a uv sterilizer is what I did fixed the tank in 24 hours
 
Well, after talking with the fish store guy, it turns out that our gravel sucker is designed for a 15 gallon tank, and wasn't removing a lot of waste. I bought a new one, and hopefully that will help fix the problem, if not I'll probably try some of the ideas you guys gave me. Thanks for your help!
 
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