I read these articles (see links below) and thought it might be possible to make substrate tabs. That's what I meant by hand-rolled. If I'm wrong I'm wrong but if it's possible I still think it would be cool to make them.

Practical PMDD Information

How To Dose Plantex CSM + B

Anyway, I think I'm going to order the rest of the ferts and clean out the tank when they come in and start dosing EI. Tomorrow I'll get some Excel...it's just too d*mn cold today.