Nothing amazing yet, but it's taken me a good few hours so I thought I'd share my progress!
My 12 and 14 gallon tanks and my teeny tiny shrimp tank. Dennerle Deponit 9 in 1 fert under Dennerle Quartz gravel (1-2mm, rounded), Superfish Aqua-Flow 200 in the 12 gal and 400 in the 15, sponge air...