I have been brewing ACT in a 55 gallon barrel. I'm experimenting using it on lawn to see if it can replace regular fertilizing or at least supliment it. Here's the question. I've been using an aquarium bubbler for aeration but I read somewhere that it's no enough. So this past batch, I decided to use my Sub pump. I attached a small length of hose to it and let the water shoot back into the barrel. I figured that was more than enough air. However, the water heated up significantly because the pump get's hot. I'd say it was 105+. Will this harm the tea at all??
Another option would be to set up a flowform or some other sort of fountain feature, rather than pumping water directly back in.
That way, the cooling would go right along with the aeration.
A working flowform can be a lot of work, and sometimes a lot of expense, but they're really fun to watch in action, almost as good as a campfire.
"the qualities of these bacteria, like the heat of the sun, electricity, or the qualities of metals, are part of the storehouse of knowledge of all men. They are manifestations of the laws of nature, free to all men and reserved exclusively to none." SCOTUS, Funk Bros. Seed Co. v. Kale Inoculant Co.
Get a bigger air pump, they come in all sorts of sizes (the biggest one I ever worked with was sufficient to aerate 3K gallons, man was it a beast), then make yourself a basswood airblock. Cut a piece of basswood into roughly square cross sections across the grain, then soak it overnight in water, glue it into a cube with superglue and drill a hole in one end and glue in an airline fitting. You have to keep it wet until you are done with it because drying out will crack it, and you may have to trim a piece or two to get it to fit together well if you don't have steady hands (with which to glue pieces that barely overhang) but it will produce a huge volume of tiny bubbles for you, much better than those cheap air rocks.