What to do after major full on crash?

[SlugSnorter]

so basically my fish died a few weeks ago from brook, a bummer, but I still kept params good, things were solid, my uglies ended and started to get some nice coraline and that green coraline precursor algae stuff. Well, cut to last night, for some reason barely any water was coming through my back chambers, leaving it both somewhat stagnent in the DT and mostly unheated, the coraline and green coraline stuff is black now and I haven't seen my snails, (cerith and naccarius) is there any hope for my tank recovering? or is the whole cycle ******. Could my snails still be alive?

Edit: got a heater and pump in this morning, flow is fine, but im worried its just too little too late

 

[ReefSlice]

Biggest water change possible, and test for ammonia. Take out anything you find dead.

 

[monkeyCmonkeyDo]

Did the teeth in your overflow.clog up?

 

[Acros]

Do you not have an auto top off?

 

[SlugSnorter]

Do you not have an auto top off?

I do, what about it?

 

[Acros]

I do, what about it?

Was wondering why water stopped flowing through the back chambers.

 

[DeniseAndy]

What size tank do you have? This will effect what I suggest you do.

 

[SlugSnorter]

Did the teeth in your overflow.clog up?

It seems maybe, yeah. Cleaned it all and made sure everything is fresh and doesn't have specs of anything at all (filter floss, filter cup, filter chambers, etc) and flow is back.

 

[SlugSnorter]

Was wondering why water stopped flowing through the back chambers.

my ATO is in my overflow chamber, so thankfully it didn't go off and flood my tank