I need to research "dosing". I constantly hear about it, but haven't looked into it yet.Can't really go wrong with RC. High Alk is its only flaw, but only a flaw in certain circumstances. It generally just allows you to go further down the reefing road doing waterchanges before you need to start dosing. It can be an issue though if you need to do massive waterchanges on an SPS heavy tank with a lower dKH in a hurry, but that's about it.