Originally Posted by Georgiadawgger
Maybe I got a bad batch of Plantex??? Actually, I don't mind the frequent mixing...the woman calls me the "mad scientist" whenever I break out the graduated cylinder, DI water and some random powder!!
Maybe the DI water is what is causing you trouble with you're mix, I use straight tap, in old flourish bottle's and have never had an issue with mold,
I bet if you use tap on you;re next mix it may solve you're issue as well.
I dare ya to try it
Although I also have an RO/DI unit, thought has never crossed my mind to use it for that, I do however use it for my bubble counter.