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Awesome. Thanx for the reply. I'm gonna try use silicone in a cardboard ring-shaped sandwich mold, hopefully it can cure quick thru the cardboard.

Interesting, yeah they pricey hey. How these selfmade ones turn out after use? What mold did you use?

Why 3 parts, your epsom is separate from mkp. Are you experiencing Magnesium Phosphate precipitation issues?

Here is how phosphoric acid controls pH as a function of increasing pH. Note how the H3PO4 becomes PO4 + 3H+ at like pH 13. Those 3H+ only are ionized or released, as the pH goes in the wrong direction (up), so the phosphoric acid molecule corrects for this by making acidic H+ hydrogen ions...

Potassium bicarb is what's known as a "weak base" which is why it makes a actual pH buffer in biological systems, and adds extra K seeing that you must add more than KOH. Buffer chemistry 101: strong acids and bases don't make a "buffer" per se, because they completely ionize in solution and...

Doing some safety research. Found some toxicological case reports about Potassium Hydroxide KOH below. From this it seems safer and better to use Potassium Bicarbonate which can be used as an actual chemical buffer against acidity, and isn't a strong base like KOH, which apparently can melt your...

It's what we got for now. Most dichots have "similar" nutrient ratio needs, apparently.

Maybe, but can you present me with better data? For recycling hydroponic systems such as NFT? I've seen the advanced nutrients one, and would love to see something else.

(Reposted from advanced marijuana cultivation. So here is where I think I should post nutrient science.) Found this gem the other day. If you a NPK ratio perfectionist like myself, have fun, just zoom in to read. Been scouring the scientific literature for cannabis nutrient uptake ratios as I...

Found this gem the other day. If you a NPK ratio perfectionist like myself, have fun, just zoom in to read. Been scouring the scientific literature for cannabis nutrient uptake ratios as I am formulating my own nutrient solutions for recycling hydroponic systems. Looked at reverse engineered NPK...

I have noticed from making my own "Bloom" stock solutions last year that after an hour or so that I get a nasty slug precipitate forming, which contained MgSO4 + MKP + KNO3 MKP + MgSO4 in same stock tank or bottle apparently is fine acc to some people, but others (like Haifa) say no those are...

Blue water White light Shiny salts Green life

God dammit.

What dosages you try

Has anyone experimented using Salicylic Acid (SA) for hydroponic nutrient solutions? There is a ton of good info on foliar application on food crops, and I hear it can make a great chelate/complex agent for minerals, because fuck synthetics like EDTA, which are building up in the environment...

To add another option; Samsung strips from digikey have the same physical diode as QB but more spacing flexibility than QB, well at least in terms of the 2 sizes of strip lengths available, and no of strips per area you want.

It's quite alarming how some blogs and forums on the web confuse SOG vs the somewhat exclusive "perpetual harvest technique". These are NOT the same concept, though they can be used together. SOG: Involves a uniform canopy of buds, which only should involve plants of the same growth stage for a...

My first real LED build, thanx to the decent info embedded on riu. So I went balls-to-the-wall and hooked up 10 F-series gen 3 (SI-B8T521B20WW), the 4000K ones, to a Mean Well 480HB. Did parallel spidery wiring style over snaky series one, simply because I trust current over voltage. The space...

@Cold$moke yeah I tried those for years and it led me straight to DFT type systems Thanx for your input Eksander. I actually have been trying a flood-n-drain style DFT (deep flow technique) The thing I'm noticing with my system in square 8cm (3.2") pvc pipe, is that if plants get too large...

@Atomizer. Best thread ever. So much info crucial info here I need on proper root Oxygenation. So you say a thin film of water would not let enough gasses diffuse in and out? So the NFT notion that a thin film of water adds oxygen to solution, would you say that is unfounded?