that would be great, i think drip system works alot of trick in their growth rate in polypterus. MAYBE? im not a pro, but i do alot of research and try for myself.
I think of he grew a few inches within a month you should be fine. I've had mine for 6 and it just broke the 10" mark recently. I got her at 2.5-3". How big is yours then and now? He might seem smaller cause he's a male, females get bigger faster, at least that's what I've noticed.