HELP!
Yesterday afternoon around 4.30pm I did a 20% waterchange on my tank - couldn't do more as there were discus wrigglers in the tank. This took until about 6.00pm. Added prime & water conditioner. By 9.00pm last night the discus were up the top of the tank, along with some rummynose and the snails were heading for the top as well. Couldn't do a lot at that time of the evening so added more prime as it says 5x the dose can be used.
This morning they were still near the top, hundreds of snails were up, one rummynose dead. Currently doing another 20% change. Tested water - even with the prime added the ammonia showed .25.
Suggestions appreciated. Absolutely no idea as to what is going on.