Liquid Silica
-Dyna Grow Protekt - Potassium 3.7%, Silicon(SiO2)7.8% Though SiO2 is silicon dioxide, and Silicon is just Siā¦ 1-5ml per gallon
-General Hydroponic Armor SI - Derived from potassium silicate. Soluble potash 4%, Silicon Dioxide(SiO2) 10%. about 1-5ml per gallon
-Advance Nutruents Rhino Skin - Soluble potash 0.4%, Silicon Dioxide(SiO2) 0.15%ā¦ read in a forum that a rep claims itās so low because plants supposedly can only absorb about 1% silica, which if even true you could just use less of something stronger.
-Cyco Silica - Derived from potassium silicate. Soluble Potash 3%. no silica amount labeled and even the MSDA sheet is full of āN/Aā. Really makes me trust Cyco. 4-8ml per gallon
-Dutch Master gold range silica - ā1.4% silicon derived from potassium silicateā, Soluble Potash(K2O) 2%, manganese(Mn).001%. 2ml per gallon
-Botanicare Silica Blast - Soluble Potash 0.5% and then the bottle says ā2% silicon(Si) derived from sodium silicate and potassium silicateā but itās my understanding that potassium silicate(k2o3Si) is made from Silicon(Si) and potassium(k2o) so I donāt know what they are saying the 2% isā¦ 2.5-5ml per gallon
-GrowTek Pro Silicate - Just says 0-0-3
-Mad Farmer Silica shield - Derived from potassium silicate. Silicon Dioxide(SiO2)8%, Soluble Potash 3%. 5 ml per gal. TIP: I strongly suggest new small growers find this companyās sample pack. I checked out the prices and itās over $100 value of optional additives for just $12 shippingā¦ has silica shield in the sample pack.
-Humboldt Structural Integrity - Derived From: Sodium Silicate(another brand āPotsilā mentions specifically that they avoided using sodium silicate because of impurities) ā6% Silicon Dioxide(SiO2)ā is all it says. 1-3 ml per gallon
-Potsil(UK) - Listed as 34% Potassium Silicate, 11% Potassium 23% Silicon Dioxideā¦ 2ml per 10L(3.8ml = 1 gallon)
-Aptus Fasilitator - I donāt know but an 8oz is $150 so fucck that. 5L = $8000 onlineā¦ wtf
-Bloom Advanced Floriculture Silica - Contains potassium silicate 53.2%. Apply 1ml per 3 lters of water. Be aware that the % of potassium and silica is combined into one number to seem higher.
Powdered Silica
-Skunk Labs Silicate 7.8. DIY silicate powder - Derived from potassium silicate. Soluble potash(k2o)3%, SiO2(silica dioxide) 52%. 1-2ml per gallon.
-NPK Industries RAW Silica - Derived from Diatomite. 45% Silicon dioxide(SiO2) Potash 3% . Says to use 1/8-1/4 tbs per gallon in reservoir, but it also says 1oz makes 100 gallons but there are only 6 tsp in an oz. Also the only PH neutral Silica Iāve seenā¦ So IDK wtf is going on with this stuff compared to most of the others.
-Agsil 16H Potassium Silicate - Potassium: K = 26.56% K2O = 32% Silica: SiO2 = 52.8% Use at 35 PPM or .25g/gal. This is probably the best option IMO Thanks Psychotron for mentioning it.
-Kelp4less(ebay) - 65% Silicon Dioxide, 5% potassium Dioxide. 2.5-5 ml per gallon