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So just to clarify, should I be using Epsom salts in my res with those tap values or not? I do have the CalMag if necessary. I'm still seeing what looks like possible calcium or magnesium deficiency (the little brown spots appearing on my leaves) but I'm not sure if it's new spots or just...

I have just over 4mg/L (milligrams per liter) of magnesium in my tap. 20mg/L (again, milligrams per liter) of calcium. Are those values okay? Should I be supplementing with anything?

Also just to clarify my calcium is 20mg/l not 20ml/gallon

I've got 8 plants, each in a single 5 gallon bucket plus a controller bucket approximately 3.5 gallon in each. A separate res auto tops with ph balanced water.

Yes, .7. I thought that was the norm ... sorry I didn't specify. Starting ppm on .7 scale is between 90 and 110. My total ppm reading is 670ppm so figure I'm right around the 560 mark.

Right now they're getting approximately 2.5mL/gallon of micro, grow, and bloom. I think I leveled out around 600ppm with that dose.

Calcium is around 20mg/L in my area.

I had some issues with white slime accumulating on all my hoses that eventually contaminated the water and made it stinky before even adding nutes. I ran everything for a few weeks to dial in the environment just right before adding anything. The low dose bleach cleared it right up. I might...

Not spraying them. Growing in 8x4 tent, Vero29 LEDs at around 15-18", temps 75-85F, RH a little low hovering between 35 and 45. Using less than 5 drops of bleach per gallon a few days after I change res to keep it sterile. Problems present themselves before this. They actually seem to be...

I'll have to wait until tomorrow. Baaaahhh. Are you positive it's a mag deficiency? I thought excessive calcium/magnesium couldn't really hurt anything. 1tsp = ~5mL. I added ~160mL to a 40 gallon res so that's really only 4mL per gallon. Too much?

I also realized I was following the soil feeding guide at 1/4 tsp micro, 1/8 grow and 1/8 bloom per gallon . I upped my ppm's by doubling all of that a few days ago to 1/2 tsp micro, 1/4 grow and 1/8 bloom before scrolling down and seeing for dwc they recommend 1/2 of all three parts. So I...

I was using CaliMagic. Directions say 1tsp/gallon. No RO. Tap out of faucet is 90-110ppm. I was using 1tsp/gallon per growweedeasy feeding guide. How much shoule I be using? I added about 30tsp to around ~40 gallons.

How much CAL mag should I add per gallon? I already dosed 1tsp/gallon. My ph is currently 5.8 - 5.9. Do i have magnesium lockout?

http://imgur.com/a/jjcyL Better coloring with the lights off. These pictures accurately reflect what the issue looks like.

Rapid Rooter under the pellets is wet to touch. There's some Browning on the leaf that I can't describe although the pictures I took were really clear. https://m.imgur.com/a/0PL4b https://i.imgur.com/twuUi95.jpg Thank you for liking!!! Also it looks worse in person. The lighting skews the...

I am utilizing a drip fed system in a clay pellet medium. Drips 5 minutes every 45. Need one more like to post the pics. grrrrr.

Please like this post so I can link to pictures! I started my Super Skunk fems in a Rapid Rooter tray under a heat mat and fed them plain tap water for the first week and a half. My tap is high at about 7.5pH. By about 12 days there were a few sets of leaves and the roots were showing through...

Nobody? No peer reviewed papers on water oxygenation?

I've been reading a lot about oxygenation and have managed a few large fish tanks over the last few years ... I don't run any bubblers in my larger tanks as I have a powerhead shooting water up and breaking the surface, thus oxygenating the water. My fish have never had a problem. I was under...

So I am having trouble finding legitimate sources that show me the data for efficiency of the newer gen COB lights. Vero 29 gen 7's, quantum boards, etc To my best estimation, a Vero 29 D Gen 7 COB efficiency is approximately 1.9µmoles/s. Compare this to a common blurple at .5µmoles/s or an...