A lot of the bacteria is in the filter pad, so you don't want to replace it and throw all that bacteria away. Only replace it when it's falling apart.Then replace it with aquarium sponge which lasts forever.
Never afraid to do an extra water change :)Bacteria live on surfaces and in the filter, not so much in the water column. Water changes, even large ones, do not damage the cycle nor harm the nitrifying bacteria, nor do they in any way harm the fish. In fact, it's quite the opposite.
i want to clarify a few things on my tank. i have a 1.5 gallon tank with a under gravel filter. If i read this correctly, i should be doing a 50% water change weekly correct? If so, do i need to condition the water that i will be putting into the tank prior to adding it? And if so, how long should i wait after putting the conditioner in to add it to the tank.
- Thanks, new betta owner
In your size tank I would be recommending every day water changes. I think the thread is a bit out dated for the recommended changes, that's my personal opinion, knowing how fast ammonia can rise in a un-cycled tank. How are your Ammonia levels, are you aware of the nitrogen cycle which all new tanks will go through?
And yes all new water needs to be treated with a water conditioner before adding to the tank. Seachems Prime is a good water conditioner to have as that will help detoxify Ammonia, Nitrite to a safer form.