Yeah I’ve got a bottle and I hoy a bit in now and then but unsure of exactly when to use it. I have the advanced nutrients one...Always have a bottle of calmag handy dude LEDS do seem to burn through it more but there's a few people on here that use it under hps i use canna mono calcium and canna mono magnesium
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/162187842130 [emoji106]
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http://www.hydroponics-hydroponics....L-VEHth8Yn4z_kAU3QRxq9f_ww9pUuBhoCA6UQAvD_BwE
What’s the benefit of having the cal and mag separate?