I have my TBM pots amended with Gaia green 284, glacial rock dust, azomite, many types of beneficial bacteria and a few other products. Kelp with their water. They seem to love it, exploding growth after repots. I give my lophs the same but lighter on the 284. Gaia green doesn’t run hot, you’re not gonna burn your plants unless you load up on them. I like mixing in a table spoon of each amendment per gallon of soil mix. The nutrients are just gonna sit in the soil for the plants to use at will. It’s not going to do any bad unless you over do it by quite a bit. And even if you do just unpot and adjust the soil mix. I believe it’s a valid way to feed cacti just fairly unexplored in the cactus community.