I just got done collecting 2 more garbage bags full of leaves and have started adding them to the tank. It takes a while for them to water log and sink but I'm hopeful that by tonoght I'll be able to get a full tank shot.
Oak leaves are fairly unique. They are "lobed". While there are some variances from specie to specie, for the most part they have the same characteristics. Here's a pic of the type I am using:
To answer Jeremy's question, acorns grow on oak trees. If you have an "acorn tree", then yes, it is the right kind of tree.
I see no reason why you couldn't use the dead, dry branches of an oak tree in your tank. It is the sap that carries the toxins used in chemical warefare against other flora. If the various parts of the tree are dead and dry they should be safe to use in your tank. If in doubt, don't use it!
I have used the following trees and leaves in my tanks over the years with no ill effects:
- Apple wood
- Maple leaves
- Golden Rain Tree (Koelreuteria paniculata) wood
- Cedar wood
- Juniper wood
- Oak leaves
I'm not too concerened with vacuuming my tank while the leaves are in there.
- I have the tank on an automatic drip that dilutes nitrates as they build up
- I have a bare bottom tank so even if I were to let the vacuuming go for a few of weeks I probably have less detritus in my tank that someone who has gravel and vacuums theirs frequently.
When the tank is ready I'll take pics and post them in a new thread dedicated to just the tank. I'm also going to try and get the RO unit back up and running today so that not only do I have tanins and a drop in pH but my water will be soft. Already the
Hoplarchus and Motoro rays have started breeding activity. The lents and Cichla have really started to color up nice.