Review Two little fishies KW reactor 300

[Casey8]

I am interested to get this reactor, but before I spend money on this product, I would like to know if anyone has good or bad experiences with it.
Without buying this reactor, can I just mix the KW into the container and drip it at night ? Is it a waste to throw the bottom away after a few days used ? With no reator, there is no way for me to mix them up constantly, so I think it's a waste for not having a reactor. But I can't afford to get an expensive one, the only one that I think is a reasonable price is the Two little Fishies reactor.
Please share your experience if you are running one.