Esshup, you're the man! Thanks! You've given me quite a lot to digest but it all makes sense. Now that we're going into late spring, is it too late to stock tilapia? They'll all die during the winter, right? I love the alum treatment idea too. The water is a bit muddy anyway, especially in March-April before there were any submerged plants.
By the way, the Texas Hunter fish feeder you provided me with a couple of months ago is working great. Already the BG are getting noticeably chubby!
