I don't have fungus gnats. Not throwing money on something unnecessary isn't the same as cheap assing. If you want to throw your own money away, go for it, makes zero difference to me. I also don't buy new clones every cycle, because I can take my own cuts. Does that also make me cheap? Actually the fact is that I save time reusing my coco, because I don't have to drive to the store and buy a new bag, so maybe it's more about me being lazy than cheap. In reality it's about reusing materials. I also don't throw my produce scraps in the garbage, I put them in my worm bin. Does that make me cheap because I don't buy worm castings? No, it makes me smart.