I see your point and I'm wondering if running the RO/DI through after each dose will help delay any clogging.
Does 29 gallons qualify as small? Regarding accuracy, I'm adding very small amounts - 1/4 to 1/2 teaspoons of each type of supplement diluted in about 6 ounces of RO/DI or tank water, based on testing for alk, calcium and magnesium every day for three weeks to determine a regimen that keeps things stable. So far I'm maintaining calcium at 400-410, alkalinity at 8.3, magnesium at 1300 (though it does tend to drift downwards) and pH at 8.0. This is the first week I have not tested daily and I'm looking forward to testing on Sunday, when I can see how things stand.
I've kept a test result spreadsheet since early August and noticed a slow, steady trend upwards for all of these levels - they were very low at first, after about a month of having all the new stony coral. Alk was down to 5 at one point. That was when I realized I had to do something about it.
I really appreciate your insight and will have to monitor things closely.
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