I can't keep up levels

[spawn]

Again I test & match the in-going water to existing. Yes I agree high demand but can't help but wonder will it settle out for a while? Ultimately I guess I'm looking for people who've had a similar experience while trying to "dial in" their SA doser.


Why is sps so awesome that I had to fill my 1st tank with them, & then turn out to have this & patience as my biggest issue's so far?