My first grow was NL x Shiva and WW. Both went well IMO, and the WW went especially good. Though I've nothing to compare to. Used a 400 hps, and no ph or ppm meter. I did occasional drop/paper ph tests. I winged the nutes using various people's formulas posted here.

I bought a ph meter and today got a Bluelab Truncheon so I can grow better. I'm now growing new plants which are about 5-6 weeks old still under MH light. I tested the water with the truncheon. CF 12, EC 1.2, ppm @ 700 = 840. ppm @ 500 = 600.

I "think" I'm supposed to use the 500 scale? If I'm wrong, please let me know?

I cleaned the rez's and refilled using the GH chart for 6 weeks so I can start bloom phase. Tested at 1200 ppm (using the 500 scale on this gadget). It seemed like ALOT of nutes to me, but I'm trying to go by the book. Then I tested for ph, and added a bit of ph down. I'll retest everything in a bit.

For some reason, I'm uncomfortable with this. I don't really know how to use this ppm meter or what the point is. I'm not even sure how to read it at this point. I'm worried I just burned my plants by upping the nutes according to that chart. And to top it off, I added a few drops of Floralicious plus and that raised the ppm even more. It leapt to the 1300-1400 level.

I guess I'm confused, and looking for comments on the above and if anyone has one of these truncheon meters - am I reading it correctly? ec x 500 and not the ec x 700? Thanks!
moreover123 Reviewed by moreover123 on . I'm Lost - New Bluelab Truncheon. Nute questions My first grow was NL x Shiva and WW. Both went well IMO, and the WW went especially good. Though I've nothing to compare to. Used a 400 hps, and no ph or ppm meter. I did occasional drop/paper ph tests. I winged the nutes using various people's formulas posted here. I bought a ph meter and today got a Bluelab Truncheon so I can grow better. I'm now growing new plants which are about 5-6 weeks old still under MH light. I tested the water with the truncheon. CF 12, EC 1.2, ppm @ 700 Rating: 5