So yesterday i pulled all my fake plants and put in some i purchased from the ac classifieds and a couple pieces of driftwood ive had soaking for a couple weeks now..and a couple of rocks i pulled from a small stream while on vaca. Everything was beautiful yesterday but i noticed when i got up today that the water has a slightly greenish/brown tint. My friend insists it is because of the white rock i have and no background sitting next to a white wall and all the green from the plants is reflecting off both of those. Was just wondering if this is possible or if it could be from the wood i introduced. thx