| Re: Northbay 210
7% Water change is done once every 2 weeks
DIY two parts is used for making adjustment and magnesium is provided by adding 10% of dolomite to the calcium reactor.
Water change can be done quickly since I have another 55 gal tank full of make up water ready in the garage that is plumbed to the sump so all I have to do is turn the gate valve to add new water after I drain out enough old tank water from the system.
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