calcium

How much magnesium sulfate for 50 gallons of reverse osmosis water?

Hi everyone! So I have a little issue I have not seen yet, I'm guessing it's water stress ( and read up possibly calcium deficiency) just not sure what yet. So I'm in 3rd week of veg 600w mh, using cocoloco soil mix. 70-76 day time temps 66-70 night. 55/65% humidity day 65/75% night . Only gave...

I would like some feedback on the following. Calcium chloride. Cutting edge.. Calcium nitrate. Botanicare.. Calcium carbonate.. gh..

Can't find any cal-mag. Any quick working substitutes?

What's up with my dinafem critical 2+ ? see pics, I worked hard on getting them onto my laptop. Location; Central California miracle grow dirt with perlite inside and on top to discourage bugs.

I am brand new to this forum and excited to use it i should have started a while back. Anyways i am currently at week 6 of flower day 42 in my 4 by 8 setup. I have 7 flowering plants. I want to go over full details of my setup another time but im currently having and issue with my fan leaves. Im...

I have 4 white widow plants. Room has an average temp of 73 / 69.7 degrees. Humidity is average of 34.3 / 32. Light cycle of MH 600 watt bulb is 18/6, distance of about 12 - 14 inches depending on plant, as differing heights. Fan is large tornado type on low, blowing not directly on plants, but...

i know..cal mag diff..but i put some in the beginnig guess i gotta always put it with ro water since its lk 20ppm lol but I posted on here to get more responses..what's the best or your experience with non organic dwc grows.. Thanks

Cal/Mag deficiency shown with leaf cupping and brown spots. Using nutrients with no minor elements listed in the ingredients. If this looks like something other than a calcium, manganese or magnesium deficiency, please comment.

Someone from another site said it looked like calcium but I have been using calmag at full strength and ff nutes not at full strength, big bloom, grow big, tiger bloom Been giving less grow big since it started budding and it should have 3-4 weeks left I thought it might be potassium but it...