Ammonia spikes after cleaning tank

Get help on those urgent fishkeeping problems!

Ammonia spikes after cleaning tank

Postby zebrafisherman » Mon Jun 03, 2013 3:47 pm

I have a series of ten gallon tanks for rearing zebrafish. When the tanks get scuzzy I scrub them with tap water, and refill them. I don't touch the filter or heater so as not to disturb what seems to me to be an innocuous bacteria ecosystem in the tank. Within 24 hours of refilling the ammonia level is extremely high, sometimes greater than my test kit can measure at over 1%. This is a big problem, because I am constantly refilling the tanks and still unable to safely add fish.
zebrafisherman
 
Posts: 3
Joined: Sun Jun 02, 2013 3:54 pm

Re: Ammonia spikes after cleaning tank

Postby Angel Fish » Mon Jun 03, 2013 6:08 pm

Could you describe step by step how you clean the tanks?
With good filtration a tank should never get scuzzy especially if you do regular water changes.
What dechlorinator do you use when you refill the tank?
All the advice I give is based on my own personal 30 years of experience.
Main TT Page
Diabetes Forum
User avatar
Angel Fish
Moderator
 
Posts: 6239
Joined: Fri Jun 15, 2007 12:09 am
Location: Dartmoor, Devon

Re: Ammonia spikes after cleaning tank

Postby zebrafisherman » Tue Jun 04, 2013 3:07 am

Note that these are lab fish with just water, fish, heater, and filter in the tank

Cleaning procedure:
-siphon out water with a hose
-scrub with coarse wash rag until macro-fauna disappears and water runs clean.
-flush hose with hot water, then fill tank with room temp or cooler water
-replace heater and filter
-add 10 ml Stress Coat

I think it has something to do with NH3 producing vs. consuming bacteria present in the tank since the ammonia reading spikes and follows a sort of negative feedback pattern.
zebrafisherman
 
Posts: 3
Joined: Sun Jun 02, 2013 3:54 pm

Re: Ammonia spikes after cleaning tank

Postby zebrafisherman » Tue Jun 04, 2013 3:08 am

Maybe two weeks since last cleaning, on averae
zebrafisherman
 
Posts: 3
Joined: Sun Jun 02, 2013 3:54 pm


Return to Help!

Who is online

Users browsing this forum: No registered users and 5 guests

cron