Hi, i'm Dr.B i have about 7 java ferns, 2 what i think is hornwort, and 2 of some plants my LFS threw into the deal. My java ferns are just dong horibble. i bought 2 for my 75 gallon with gravel and had them for about a month. No new growth only leaves slowly turning brown then rotting off. And now i bought 70 bucks worth of plants for my 20 gallon for my apistogrammas that are supposed to come in at the end of august i need a solution and i need one fast. I have 4 juli corydora currently in there now and i'm planning on getting 2 apistogrammas (fire red agasizii) and like 3-4 neon tetras, as well as about 10-15 Red Cherry Shrimp. My lighting fro my 20 gallon is Aqueon 8,000k full daylight spectrum 15w 120v T8 18". And just for some extra help my 75 gallon lighting is Aqueon 8,000k full daylight spectrum 32w 120v T8 48". I really need help i just can't find any info anywhere so i was hoping you guys could help me out because i don't want to loose 70 dollars worth of plants. Don't know if i added this but when i transferred the 2 java ferns from the 75 gallon to the 20 gallon my 20 gallon has sand. I Just today added sand to my 75. And i really don't want to add a Co2 system i would really like to prefer some kinda supplament. I have been looking at tablets you put under the roots and other C02 boosting things etc.... Thanks in advance Dr.B