Substrate question

[JJohnsen]

What is impaction? Ive been doing a lot of research and this is the first i've heard of it.

[GRKIDDO]

I have heard about mixing species, but also talked to many people who have had success with them as well. As I said so far we havent had any issues. Even with the filter I drain the water once a week to week and a half.
I did see a picture of a bearded dragon with prolapse. Not good. Okay pulling out the moss now and replacing with coco fiber. Just another reason to go to the pet store!!! Thanks so much!!

[GRKIDDO]

Oh and the divider between the land and water is about 1/8-1/4" higher then the land. There is a branch that is submerged so they can climb on land and then a rock close to the divider for the same reason. So far I havent had much more then leaves that fell off the plants in the water.