where do i get magnesium??

hey guys, so im pretty sure that my plant is suffering from magnesium deficiency (maybe and/or potassium), but how the hell do i correct this with a plant in a bubbleponics system? first off does anyone know what the composition is of the nutes that come with bubbleponics? there are 2 diff bags of nutes in the "grow" bag -- one is called 'micro' and the other 'grow' (theres only 1 bag for the 'bloom' fertilizer). the 'micro' looks kinda like sea salt, and the 'grow' looks kinda like.. powdered drink mix?? (no i dont drink it heh). so is one of those 2 magnesium or potassium? or should i try one of the two?

Cal Mag by Botanicare or epsom salts will do the job.

ok. looks like ill be getting some epsom salts at wally world.

ok and how much of it are you going to use?? Please use the old axium, IF IN DOUBT FLUSH IT OUT. I've never used bubble, I bet it kinda work the same. If you flush them and then mix your nutes properly, it should take care of the problem if it is a deficiency of some kind. I'm thinking a picture of the problem might be helpful here. If you are changing out your res and adding nutes properly this really shouldn't be a problem.?? VV

did your nutes come with a feed chart???? you need a chart to tell you how much of each nutes you need to mix for the stage of growth your plants are at.

any good quality nutrients should already contain the right amount in the right proportion - agree with peter parker - check the feed chart.

If it's the Stealth Hydro nutes you should get a calcium/magnesium supplement or just get some good nutes. in all honesty the SH nutes didn't work real well for me....also if you look in the pdfs they gave you, you can find the nutes info

thanks for all the advice guys. im thikning im just gonna overnight order some high quality liquid based nutes for a hydro system. any specific suggestions? had good luck with certain brands?

I like General Hydroponics (i've been successful with both the regular Flora and FloraNova series) but i've never used any others so can't really compare. Hopefully some folks with more varied experience can help point you in the right direction.

I've used Botanicare Pro Blend and am very happy with it, organic and not too harsh.