10g Substrate

Peat moss floats so it would need to be covered well. Peat moss will also lower your waters ph. For a ten gallon tank, personally Id purchase one bag of fluorite or eco complete to use.
 
yea i have to agree, id go with flourite. thats what i used to have when i had my 10 gallon set up. everything grew great, and it looked nice. you could pick it up at petsmart. usually around $23 a bag here where i live. petland has it sometimes also for a couple of dollars cheaper usually.
 
Im pretty sure you can order it from Big Als online..let me see if I can find you a link
 
AquariaCentral.com