Did I Kill All The Beneficial Bacteria In My Tank?

Cywangton

Member
Hey there, my tank was fully cycled and in good condition (besides from an algae bloom a week ago that's somewhat under control) when my parent thought it would be a good idea to change the water. So, tap water was added in without being conditioned.

This happened at 2:00pm and I immediately added conditioner at 6:10pm when I found out...

My tank has an underground filter, so the beneficial bacteria is probably all in the substrate.

Did all the bacteria die? Tap water was in the tank for 4 hours.

If so, should I add some cultured bacteria like tetra safe start? But the earliest I can get it is in 2 days, so will that be really bad?
 

DutchAquarium

Member
You should use a test kit and see what your levels are at. If there was a swing, then you might have problems.
 

TexasGuppy

Member
Good chance it was at least harmed. May be a day or two before you see ammonia climbing. Be ready for a fish in (mini)cycle.
 
  • Thread Starter

Cywangton

Member
Oh I forgot to mention that it was a 75% water change...
I'm pretty mad about it..
 

Fanatic

Member
Yeah, that's definitely going to impact your cycle.
 

TexasGuppy

Member
Petsmart sells an API ammonia alert you hang inside the tank.. It's good for a few months and may be an easy way to monitor constantly. It doesn't do nitrite however... so you'll need to still watch that manually.
 

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