Thank you Geoff I should have clarified my post regarding nitrogen. And Terry, you are actually too thorough with your tank maintenance. You don’t need to change all the water at a time. 10 percent is fine. I applaud your commitment to your animal but you’re making too much work for yourself. Once a tank is fully acclimated and has passed it’s nitrogen cycling ( two weeks or more sometimes) it will require much less maintenance. Only if you add excessive food and add multiple animals will you have to do so much cleaning.
weeks