My return to growing has been rattled with soil ph issues (50% ffof 30% coco 20% perlite/earthworm castings/kelp) turns out my mix was in the 5-5.5 ph range. It's time to mix another batch of soil up so I went ahead and bought a 5lb bag of powdered dolomite lime that has a healthy amount of cal/mag in the mix. Anyone have any ideas as to how much I should amend in per gallon of soil mix? Ideally going to let it sit for a week-10 days before introducing my next batch of seeds.