He missed a big one, well known to those who run aquariums; waterfalls. These not only increase DO by increasing the effective surface area of water in contact with air, but also stir and agitate the reservoir they're placed in, resulting in good mixing and nutrient diffusion.
Waterfalls reduce this problem by allowing water to evaporate, thereby controlling temperature rise.
I agree, but in a small system like mine, it's hard to do as the lid must be sealed off due to F'ing mosquitoes getting in and laying eggs
Waterfalls churn the water's surface and drown them, solving this problem before it starts. Mosquitoes need stagnant water and waterfalls are the antidote.
Larvae drop to the bottom whenever they see a potential predator; they'll drown if they have to stay down or if they keep getting churned under.
What kind of pump? May want to try an aquarium circulation pump if you arent already. I use one that moves ~800gal/hr at only 6w power.
well there's your problem. doesn't take many btus (relative to what even
I've run without stones and didn't get near the root mass which will affect yield.
I know. checked, it's an EcoSmart 132 (132 gph), but the plant is looking really good, better than the previous 2 grows using air stones. My mind is officially blown
RO is not expensive either U can buy the parts & DIY really cheaply the membrane & filters are the most expensive part
Units with booster pumps have very good product to rejection production