Major Cleaning

Just finished cleaning all filters medias, algae on glass surface and bottoms, all debris and dirts in aquarium, as well as cleaning all pumpsets, and pH probe.

Also, cleaned tortoises tank and moved Oscar to main tank.

Added pH down and salt to tank hoping to bring down pH and also killing all bacterias in tank.

It took me about 2 hours for all these task, but that gonna last a few months before next major cleaning.