As my cycling process approaches its end, I'm planning to do a 80% water change in my 15G tank. However, I want to make sure I do it correctly because I hear that the good bacteria will die out when the surface becomes dry. It may take me a while to do the water change (~30 min)
Here is what I would do.
1. Take off hood and unplug it.
2. Unplug heater and filter.
3. Start taking out the water using a bucket.
4. Once 80% is removed; start putting in new water (use bowl to not disturb the substrate)
5. Once appropriate water level is reached, use dechlorinator.
6. Plug heater and filter back on.
7. Put hood back on.
I'm worried that the bacteria might die out if the area goes dry before I'm able to refill the water. Also, when we say that bacteria live in the filter media what do we mean by that?
I'm scared that if i screw up I have to recycle. AGHHH!!! Appreciate the help guys