Noob question. I was running a FOWLR tank (9 mo old) so I’ve never tested the big 3. Tank has been fallow for 90 days and I wasn’t really doing water changes (2 total). 120g and 20g changes. Just got my sailfert test kit and the levels are below 2 days after last wc. If I do another water change will it help raise my levels? I use Tropic Marin salt.