http://www.llifle.com/Encyclopedia/SUCCULENTS/Family/Apocynaceae/14804/Pachypodium_baronii According to llifle.com Soil: Needs a gritty, porous cactus potting mix with peat gneiss sand, pH 4-5. It needs larger pot sizes than other species. My question is how do I lower my soil PH. Do I add gypsum ? ...

Keith thanks for the video link "Ariocarpus is super slow growing right? " YES" Elton replied " NO " Not if you give them acidic water" :D :D :D https://www.youtube.com/watch?v=BHc4W6y05jo 15:30 on the video clip. Elton mentioned using Sodium Bisulfate to reach PH 5, am...

Does anyone have experience using Ammonium Sulfate when watering? Here are the articles I found about ammonium sulfate and acidic water (Ph 5 - 5.5) https://chinlecactusclub.org/plant-watering/ https://oklahomacactusdotcom.files.wordpress.com/2017/02/ammonium-nitrogen-and-acidic-water-for-xerophytic...

I spray my Astrophytum seedlings with 3% Hydrogen Peroxide straight out of the bottle and then another spray of purified water every week. I don't see any problem and doesn't have any algae building up.

hello question about using heat mat. Do i leave it 24hrs? and 10-12 hrs grow lights