calcium question

[Beverly]

Originally Posted by fresh

I have owned a 10gal nano for 2 years, and that one went very nicely but the reason is I did a water change every week, and I really don't want to do that with my 77 gal!!!

fresh,

I do weekly 15% water changes and other maintenance on a 28g, a 42g and a 72g, then test for Ca and alk and adust these levels in all three tanks. I go through a lot of RO/DI water and my back hurts after the water changes, but it's worth it in the long run.

28g has nitrate of 5 ppm, and the 42g's and 72g's nitrates are ~10 ppm, and that's with no sumps/refugiums and no skimmers. Use only mechanical filtration that's cleaned weekly.