I have a 45 gallon that is doing fairly well. Nitrates run up to 10-15 ppm so I do a weekly water change of 15 gallons and it comes down a bit. I would like to add a HOB refugium but am unsure how to safely do it. I would like use a sand bed with some rubble rock and put in some algae. Can I use some sand out of the main tank and add a small bag of store bought live sand ? The rubble will come from a bucket of rock that was extra from
the tank.(it's been in a bucket with an air pump and heater for about two weeks). Am I thinking correctly or will this cause another cycle. Thanks
the tank.(it's been in a bucket with an air pump and heater for about two weeks). Am I thinking correctly or will this cause another cycle. Thanks