First of all, Fresh made Sw
is a buffer. If you are doing PWC
`s as needed then your PH would be OK. The correct reading will be right before your lights go out. If you can post what your PH is about an hour before the lights go out.
Secondly, your quote "If nitrates are kept under control, and trace elements were dosed, wouldn't that eliminate the need for frequent PWC
I dont believe this to be true. 1) PWC
`s dilute excessive nutrients that cause nuisance algea and affect fish health. Many a person I know and have seen on this site have slacked off on their PWC
and then they are posting threads like "Why are my fish dead" or "my tank just crashed". I have seen it over and over. 2) PWC
`s help to replenish lost trace elements that are used up by different fish and coral processes. I know you said something about dosing trace elements but they have no where near as many as a good PWC
. In a marine salt mix there are 89 different salts in there that help to make up the trace elements. liquid doses dont even have half of that. Your tank is better off doing the extra work and doing PWC
`s. If you look at my tank that`s the result of doing weekly PWC
`s for 13 yrs now. Give your tankmates the extra work necessary. JMO and IME.