Amonia spike... water change enough?
So, I have a 120 that's been running since October without incident. Been running 2 Eheim 2217s. Recently (January 7, so almost 2 weeks ago), I added 33 rainbowfish at one time. I normally would never do this, but the tank had been up and running for two months with good plant mass and only a handful of tank mates...12 fish + snails. I cleaned one of the Eheim on January 3 or so, and cleaned the other last week (around the 13th). Both times, I rinsed the media with tank water and changed the fine filter.
At first after bringing home so many fish at once, I was pretty skittish about water parameters. I checked amonia 2-3X/day. No spike. I was surprised. So, I've relaxed. I've done weekly 50% (or more) changes each Saturday, and so tomorrow is Friday and we're a bit due.
So, tonight I was just hanging out enjoying my tank when I noticed that my fish were darker in color and not as active. I got a hunch and did an amonia test: it's at .50 ppm, but nitrites at 0. I've peered in and around all that I can see of a planted tank and no obvious dead fish to be seen... so, I don't know what's causing it. It could be that I'm feeding too much... it's hard to gauge how much to feed that many more fish.
I'm currently doing a 60% water change, but my question is: will that do it? I know with Nitrates you can control that way, but is it the same for amonia? (I want to sleep well tonight!)
Tanks a bunch!
My current 120 tank journal:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Last edited by Tanks!; 01-20-2017 at 01:54 AM.