I really don't recommend that MGOC. I Had a bad experience with it in the past just like you and came to RIU to ask what was wrong with my plant and they told me the soil sucked and I changed to FFHF where my plants finished up. I thought maybe I was wrong and gave it another chance. My plants all looked like crap afterwards and after I bought perlite it was more expensive than FFOF. I really love the OF too(even if it does come with some fungus gnats), it has a great consistency and my plants love it I recommend you repot them ASAP and I'm sure it will pick up quick.