Hey guys. I just bought a ton of stuff from the hydroponic store. Over 200L of coco (with 20% petelite mixed) soil, petelite on its own, leca, and some nutrients. Anyway, I didn't know what leca did, so I just bought it and never asked the clerk who worked there anything. So from my little 2 minute Google session, I have established that it is used as a growing medium on its own. So I literally just bought 25L of leca for nothing. From when I saw it, I thought you put it ontop of the soil and it benefits it somehow. So now my question to you guys is will it do anything if I just put it ontop of the soil? Have a layer of leca? Like, will it help keep moisture in the soil and help prevent direct sunlight from evaporating everything?