Not sure what to do in this situation. I need access to a wall behind my 45 gal
tank asap because of a plumbing issue, and have decided to just move all my fish into a new 75 gal
tank since the 45 is too difficult to move even when mostly emptied. The 75 gal
has been set up for about 3 weeks now, most of the water parameters are where they should be except the nitrates, they're staying at 0ppm. I can't get the nitrates to go up even after adding moss and water from a sponge filter from the old tank, and a couple new fish. The nitrates in the old tank are a bit high at around 40-60ppm.
I need to move my fish as soon as I can, but I'm afraid the drop in nitrates would shock them. I plan to do daily water changes, but I worry that would take too long, because obviously the longer I wait the worse the plumbing issue will get.
So do I just do water changes for a week and see where that gets the nitrates in the old tank, is there some way I can quickly raise the levels in the new tank, or do I just very slowly acclimate the fish to the new water before adding them and hope for the best?