Here's what I'm up against with my water supply. Here's the tank:
Originally, it held artificial vanilla flavoring and was cleaned thoroughly prior to being put into use. The black gunk inside the tank is algae. This is year 5 for the tank. The algae has been there for at least 2 years, but is worse this year.
The water I transport to this tank is from our well at home. It tests at 7.0 at the faucet at home. If I draw a water sample directly from the tank and test for pH, here's the result....easily 8.0, possibly higher. Algae is definitely the culprit here.
After using some white vinegar to correct (5 ml for 2 gal.), it settles down to this.....6.0. If I mix in the DynaGro before correcting, then check pH, it's still 8.0. It doesn't seem to make any difference if I correct pH after adding the DynaGro or before.
Yes, I should have painted the tank opaque black prior to using it, but, you know, hindsight and all. The tank is some sort of poly and the top and bottom are plasti-welded to the barrel. Not being Elastigirl, there's no chance of me ever getting in there to scrub things down, so I'll need to be content with testing and correcting with vinegar until I find another tank.
What's the chance the issue with pH has anything to do with the condition of this tomato? This one is really trying to grow, but it's tough finding any sort of real information on what happens to a tomato when you feed it alkaline water. It's only been a week since I've been correcting pH, and, there's still the possibility of some sort of herbicide drift. Not having seen any herbicide damage before, do the leaves curl under, or do they just grow out paddle shaped? I've checked for bugs, but can't find any and the full size tomatoes, eggplants and peppers are doing just fine, and they were all raised on the same diet. I'm at the point where I'm going to stop looking at these two plants, yank them and fuhgeddaboudit I don't care about the Maglia Rosa, but the Five Star Grape would sting a bit.