Randy-Holms 2 1/2 part.
* 1 part Alk (baking soda), dosed via dosing pump at 12am, 6am, 12pm, 6pm; 33ml per dosing.
* 1 part Calcium, dosed via dosing pump at 3am, 9am, 3pm, 9pm; 50ml per dosing.
* Magnesium once in a blue moon.
Parameters hold steady with very little fluctuation:
Alk @ 8 dkH
Calc @ 420ppm
Mag @ 1400.
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Baking soda (Arm and Hammer) from Sobey's. Calcium and Magnesium from Chemmaster/Littlesilvermax in bulk.
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Pretty much idiot proof. Kind of set and forget. Just have to remember to refill the reservoirs of Alk and Calc (2 liter coke bottles), when they empty.
