ClockworkCatfish Posted November 18, 2020 Share Posted November 18, 2020 I have a 15 gallon tank with 12 salt and pepper corydoras and 6 white cloud minnows, that's been up and running for 3 months, finished cycling 2 months ago. Yesterday I noticed my fish acting weird so I did a water test and it returned 8ppm ammonia, up from 0.25ppm 4 days ago, after which I did a 50% water change. I immediately did an 80% water change, got 0 ammonia readings. Also tested my tap water, which returned 0.25ppm ammonia. I tested the water this morning, 0.25ppm ammonia, did a 10% water change, 5 hours later I tested the water and it returned 4ppm!. What's going on? Quick answers: For the last 4 days I've been giving 1 catfish pellet and one small pinch of flake food, skipping two days. I fed one single catfish pellet before going to bed last night and haven't fed them since I don't think there is anything rotting in the tank, I haven't been able to count all 12 corydoras but I removed all of my plants and scape yesterday and didn't see any corpses. This doesn't rule out the possibility of one buried in the substrate. Last time I counted 12 was last week Doesn't appear to be a cycle crash; my ntirates are up 5ppm from 0ppm this morning Yes, it was cycled. Yes it has lots of plants, including anacharis I added 5ml of profito fertiliser within the last week I've been adding seachem with the water changes in order to keep the ammonia at bay but if anyone has any suggestions I am desperate. The "nuclear option" is to remove literally everything from the tank, put the sponge filter in a bag with tank water, drip acclimate the fish to fresh, dechlorinated tap water, and add everything back in. Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now