One of the added benefits of dosing vodka vinegar is that you are creating waterborne bacteria. Your corals can then feed off them. I have a green and gold torch coral in a clients tank. It has added 10 new heads in about a year with no target feeding.
When you use a reactor in the sump you are not directly effecting the water in the display due to slow flow rates through the reactors. When you dose the vodka/vinegar and Foz Down it goes into the tank and can remove the nitrates and phosphates before the algae uses it. Thus starving the algae. Sometimes direct dosing of Foz Down into the display tank is the only way to get rid of stubborn algae.
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