Join Date: Jan 2004
Location: Formerly Central Coast CA, Now in Bridgeport TX
This question has been asked a million times, but her it goes. There are essentially three main choices, with plenty of other options. The top three substrates are #1 Eco-Complete. its black medium small granule rock
#2 Flourite. There are several varieties of flourite. from red clay to little red clay chips mixed in with larger porous rock, and everything in between...i think ive seen 5 varieties.
#3 sand. Godd quality sand. Typically small or medium grain works best so you dont have ultra fine silt. Sand is cheapest. Eco is usually most expensive followed closely by flourite. many different sand may be used. get it from home deopot for like $4 a bag
also there is kitty litter (cheap clay) and many varietys of sand/rock...you can of course mix everything. you want about 3 inches of substrate for planting/ rooting purposes....use the substrate calculator at the top of this forum. wash everything over and over...MORE THAN YOU THINK YOU NEED TO....or you will have nasty looking water.