Just trying to get peoples input on the best Silicic Acid on the market today. The main four in the title seem to be the best from the research I've done, there's been plenty of lab tests done with some degree of difference but seem to all be within the same ballpark. There two kinds of silica out there one thats available for the plant immediately (more expensive, hundreds of dollars per liter) and others that take time and aren't as effective (cheaper, tens of dollars per Liter). All the ones I'm focusing on here are the more expensive ones which all have different marketing terms but are basically providing a silica thats immediately available for the plant. I run a coco DTW system and I do not use Mills full lineup just the Vitalize. I've used Mills Vitalize for a couple years now while now and I'm happy with the results. I want to hear from others who have tried multiple of these to see what their experience is and which they like.