Don’t miss out on the best deals of the season! Shop now 🎁
Hello Country. Frequent water changes are needed because not only do the fish live in their own waste, but the fish and plants are constantly using the nutrients in the water. Water that stays in the tank too long contains a high level of toxic nitrogen and soon the nutrients are used up. The water must be replaced to remove toxins and replenish nutrients. A small tank hasn't enough water to dilute the dissolved waste for more than a few days. That's why you need to remove and replace the water in a small tank a lot more often than you do a much larger tank. This is also why larger tanks are more forgiving of mistakes in tank management than the small ones.Thanks for that
, but doing water changes evert three days would be a no no for me, once a week or once every two would do me.