I'm starting my 40 gallon X-Long build and want to do sort of what this guy did: https://www.youtube.com/watch?v=eX2Tb5NLSIQ only on a larger scale, and without using the walls. In one of the comments he wrote that he used a fertilizer meant for orchids every watering (so everyday). Since I plan on housing dart frogs I don't want to use any harmful chemicals that could cause illness or even death. Sadly, I don't know anything when it comes to gardening and this is why I'm calling on you guys. Is there anything safe and natural I can mix in with my water when I spray the moss down? I know crushes eggshells are good for regular plants but is there anything I should know when it comes to moss? Thanks guys.