Punchmananswered grow question 5 years ago Sounds like a silica issue, Rhino skin not being properly mixed, also if your using RO water you’ll want to add the cal mag at 2ml per gal and that should give you the equivalent to starting with 100PPM as sujested on the bottle before adding additive supplements. Give Ro water 15 mins to bind to water after adding for premium nutrient uptake. Try adding Rhino skin first or right after cal mag and you should be good as long as you stir really good with stir stick. Even stir and let sit for 10 mins and return to mix agin. Another helpful tip is to have a air stone running during the mixing process to keep the water moving. Hope that helps, keep growing strong! 💪🏾