I set mine up so they run for 26 sec every 2 hrs alternating an hour
So calcium runs for 26 sec @ midnight 2 am 4 am ect
All runs for 26 sec @ 1 am 3 am 5 am ect
The time it runs for will be different for your tank. As your demand will be different and I use different products for dosing
I figure every 2 hrs wil keep cal/alk levels constant enough for me
Of course you could run them for 13 sec every hour alternating by 1/2 hr
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250G DD LED SPS R.I.P.
180G LED SPS
80"x36". 300G custom build
Owner of Mountain Ridge Heating and Gas
Class A gas fitter, HVAC
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