voiceless_kat

On Friday I moved my 25 guppy fry into a larger tank. I left the 2 otos that were in with them in the smaller tank, and added the otos from Wink Jack Sparrow's tank. ( They will all be going into the guppy grow out tank but I wanted the water to mature a bit ( Bio Spira cycled). I also wanted to use the smaller tank as a quarantine tank later in the week when I get a couple more red eye tetras. ( This tank has been cycled for months, no problems)

Yesterday, I did a 30% water change on the oto tank, vacuumed substrate and changed the carb filter.( not bio wheel) today I noticed they were scooting around more than usual, so tested the water. The Nitrates are 40 PPM, everything else is 0ppm.

Can't figure out the spike, and am filtering more well water to do another water change today.

Will this be enough? Or should I just move them into the large guppy tank now? Anyone have any ideas on what would cause the spike? Can't be the addition of 2 otos, since I just removed 25 guppy fry that are a month old.


Thanks for any help, ideas, explanations.

Val

jsalemi

How big is the tank? I've noticed that its much harder to control nitrates in my 10g than in the 56g -- I have to do more frequent water changes to keep them below 20ppm. Why? Probably has something to do with the lower volume of water, I guess.

So do 25-30% water changes for 2-3 days until the nitrates are back to normal. You can also add Prime or AmQual Plus to cut the nitrates quickly.