- Joined
- Sep 11, 2019
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I have a 125 that has been cycling for about 3 months and is almost finished. I have previously cycled 2 quarantine tanks and the currently both have fish in them waiting for the display tank to finish. I had no idea it would take this long. Anyway after completing the cycle of the smaller tanks I did a large water change to lower nitrates and added fish. When the nitrites and ammonia were at zero I tested nitrates too and they were at the highest level on the api test kit. The problem is I would have to change the majority of the water to get the nitrates to a manageable number. I have an RODI setup but it will only do 75 gallons per day and only have 1 brute can to store water in. What is the best way to change the water or lower the nitrates with a manageable amount of water. I know if I do only 25-30 gallons at a time it will take forever to get then nitrates down, but if i do a large all at once the tank would have to set at least 2 days for me to make enough water before I could get it going again. I never really thought about this until now. What do people with even larger tanks do when they have built up a ton of nitrates during a cycle? Thanks in advance for your help.