While it would have been smart to measure how many gallons were put in when setting up - I did not have that option as my LFS did the set up and filled from the tank in their truck.
That said, I tried to look at total system volume and then used online calculators based on the weight of rock and sand that were added. I’ve dosed from there - which, I’d think gets you in the ballpark without causing issues. Then, I adjusted dosing until I got parameters to what I was looking for.
I also started on the low side of dosing recommendations. Figured it’s kinda like salting your food - you can always add more, not so easy to reduce once it’s there.
That said, I tried to look at total system volume and then used online calculators based on the weight of rock and sand that were added. I’ve dosed from there - which, I’d think gets you in the ballpark without causing issues. Then, I adjusted dosing until I got parameters to what I was looking for.
I also started on the low side of dosing recommendations. Figured it’s kinda like salting your food - you can always add more, not so easy to reduce once it’s there.