Wow, that's a REALLY high pH for that Kh
. is your tap water identical after you take a sample and let it sit out overnight prior to testing?
I wouldn't suggest PMDD
. The problem with it is, you've got a complete mix of ferts...NPK
and traces. What if you need to dose N because it's low? You are stuck dosing PK and traces in order to add the N. This can lead to an imbalance in nutrient ratios, and the right ratio is what prevents algae from invading the tank.
Welcome to AA by the way. Make sure you read the stickied posts at the top of this plant forum. We cover a lot of the basics on fertilization, CO2
If that spray bar is splashing water onto the bio-rings, that's why your CO2
is outgassing, so you were right in trying to mod it. You want the least amount of splashing possible.