Calcium reactor feed pump?

[MarkoD]

Ive been using the aqualifter pump to feed my calcium reactor but lately it seems to be inconsistant and seems to just stop. i tried another one and same thing.

I bought some fittings to adapt a few maxijets to 1/4" hose but it doesnt seem like they have enough pressure to push through the calcium reactor.

anyone know of how i can feed my reactor more reliably?