Originally Posted by
MrCannab1sir
Couldn't find anywhere else to slot this. I bought a ph pen, to calibrate it you do it to 3 settings, 6.86, 4.00 and 9.something. Well the first one fucked up and couldn't get it to calibrate so got another and this time followed everything to the letter. Again it didn't calibrate it past the 6.86, soon as I tried to cal the 4.00 it just says error. Gave up,then later on checked a few sites to see the ph level of volvic and most said 7.5, bought a bottle and checked it and it flashed bang on 7.50. Do you reckon this means even though it wouldn't go through the whole calibrating process its still calibrated ok for me to check the water I'll be giving the plants?
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