I have had a 10g tank for about 6 months now and I just can't keep the level constant how can I fix like magnesium, alk, and calcium, ph here is my last test but it's usually always different.
Magnesium 1410ppm
Alk 8.7 DKH
calcium 500 ppm
PH 7.9
And salinity is always about 1.025-1.026