Help!!! My whole system went down for 4-6 hrs , was swtiched of by gfci unit which

lost1st manty:(

New member
auto shut everything off my connection between my skimmer pump and hose disconneted spilling water out thus triggering gfci outlet to switch off which is all fine an dandyas i did have a backup airation unit that triggered on when power went out but i am most afraid toxic levels of polluntants accumaulated in my sump which i have heard about happening, all my systems are back up running now, what should i do now though as i dont want a wipeout , i reseeded my 150 with some biological i keep as backup in my quarantine and have added some amquel to kill and ammonia or nitrite accumulation, Im just hoping i didnt get a toxic built up in my sump which i read about alot and not sure how long it would have taken or what else i should be doing ,i appreciate anyoner immediete help and response, very worried right now

Hobby Experience: 6 months
Current Tanks: 29 gallon marine fish only 150 marine predatory fish
Interests: marine aquarium fish@critters
For 4-6 hours, it's likely not a problem. That's more of an issue with canister filters that are well sealed and will go anaerobic fairly fast. If anything, put some fresh carbon in to ease your mind ;)