Originally Posted by marty_wolff
i heard q-tanks dont need substrate, just pvc
so how do u cycle it?
No substrate, and yes... a couple PVC
elbows or wyes. If you have to medicate, substrate just complicates things from a chemistry standpoint. Plus, with no substrate, it's easier to vacuum out the gunk from off the bottom.
There are several different ways to cycle it. Most commonly talked about seems to be putting a sponge filter in your main tank for a couple weeks, letting it seed with the good bacteria, then transfering it over to your QT. Personally, I've got a biowheel on my main that I can transfer over to my QT. Since I'm still stocking my main tank, I put a small chunk of live rock in my QT along with the biowheel and cycled it with the "shrimp from the grocery store" method. That live rock will never leave the QT, and definitely will get tossed if I ever have to medicate it.