right. i have never measured calcium. I use purple up maybe 3 times a week. I did start to uses Mr Wages. in the make up water.
I have also been having a diatom problem for about 3 weeks now, im not sure where that came from. All water is through a Kent's Hi-S RO/DI which is only a few months old. TDS says 230 going in and 0 coming out. I woudl say its in low flow moderate light right now.
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95G AGA Wave| 120# Carib-sea Aragonite |100# Fiji live rock| euro-reef 80 Skimmer | Megalflow 3 sump | 6 bulb Tek-light T5 HO
250G AFY | 150G sump | 100G fuge | 35G frag | Reeflo ORCA 250 | 3x250w Halides | t5 actinics | Oceans motion custom "2way-4way" |