>My question is, do I have to put in the expensive aquarium peat, at $3.50 >for a few ounces? Or can I buy a cheaper bag of peat at the garden shop? > Does anyone have experience with this? Check to ensure that there are no additives like fertiliser or fungicides, and microwave it,and ordinary peat is fine.. <<<<<<<<<<<<<<<<<<Spug (Sparrow) London, UK.>>>>>>>>>>>>>>>>>>>>