Originally Posted by
Filip
Not a chance for ammonia spike from ferts Matt. They do not contain any ammonia or anything else that could contribute to amonia but just plain elements like N-P-K-Mg-Fe etc.
Besides that PPS Pro method of dosing that you use is a minimalistic approach with very low and safe doses of N-P-K.
Your established filter crashed somehow but I don't now how .
Did you clean the filter thoroughly recently ?
Did you by any chance took out sand or substrate from the botttom ?
Do you use dechlor for your WCs ?
Did you add any new bioload recently ?
Meanwhile , Change water daily and use triple dose of Seachem safe to bind the ammonia in unharmful compound , as their instructions advocate in case of ammonia spike .