Planted Tank Obsessed
Join Date: Dec 2014
Location: Colorado Springs
6 hour bacteria bloom after large water changes
Has anyone ever run into this before? I have a planted 125G tank.
Water parameters are:
Whenever I change the water (25G or so) I end up with a white colored bacteria bloom in the water for about 6 hours.
6 hours after it peaks, and the water will be crystal clear again.
The fish seem totally unphased, and everyone has been happy.
I can only think of two potential culprits. Either it's the difference in water temps with what I'm adding (around 78º) vs. what's in the tank (82º), or the potassium I'm dosing (muriate of potash) is somehow causing a bloom.
Has anyone else run into this? From a visual standpoint the easiest thing is to just do the water changes at the end of the day, and I'll never really see the white water.
I'm puzzled as to why it keeps happening in this tank which has been running for almost a year now, and only this tank. This is the only tank that I keep this warm and it is also the only tank where I'm dosing potassium.
I thought it might be from rinsing out the sponge filter portion of the sump, (with tank water) but the bloom happens if I leave the sponges alone.