Tropical Fish Tank Cleaning Tips
Excessive cleaning can get rid of the healthy bacteria required to break down the toxins and waste such as ammonia into harmless nitrates. So it's best to avoid changing the water all water at once.
While changing the water weekly it is essential to keep in mind that only one third of the whole water should be removed. If not, then the chemical composition of the tank's water might change too abruptly, which could hurt your pets.