Kalk dosing

richard.oberholzer.923 · Mar 12, 2016

Hi Randy
I'm trying to get my head around dosing kalk
I'm using Seachem fusion 2 part at the moment at 40ml fusion 1 and 40ml fusion 2 a day. I got an avast k1 stirrer and still deciding on what to use to pump, doser or atu? I need to know avast say 0.75 cups of kalk biweekly, my tank evaporates 4 Litres a day does this mean that I must put 4 Litres ro water through the kalk stirrer into my tank? Can you suggest how to switch from 2 part to kalk and the quantity of kalk ( lime watter) I'll need to add to my tank per day.

Thanks Richard

Brian Kim · Mar 12, 2016

Hope this gets his attention faster @Randy Holmes-Farley

Pete polyp · Mar 12, 2016

With a kalk stirrer you should be able to put a few cups of lime in it and as your topoff runs it will keep the water saturated with kalk. Daily evaporation varies so the preferred method is to hook an auto topoff to the pump feeding the kalk stirrer. You need to restrict the output of the stirrer so the limewater is added slowly to the system. At 4 liters per day it will consume around 2.5 teaspoons of lime. I hope this helps

Randy Holmes-Farley · Mar 12, 2016

Seachem Fusion is 4400 meq/L in alkalinity and 100,000 mg/L calcium. Saturated limewater is 40.8 meq/L in alkalintiy and 808 mg/L in calcium.

So 40 mL of both parts of the Seachem Fusion is equivalent to about 4,500 mL of saturated limewater (4300 based on alk, 4950 based on calcium) the Seachem product, oddly enough, has a bit more calcium relative to the alkalinity than does limewater; I would have designed it with less).

In terms of solids, that 4500 mL of saturated limewater contains 6.5 grams of solid calcium hydroxide, which is about 10 mL of the bulk powder.