I am setting up a heavily planted 40 gallon aquarium. I want to use potting soil capped with playsand for the substrate. Are there any negative effects to using potting soil in an aquarium?
Have you seen where you can get Live black worms @? I would love to have some but in small amounts. 3/4 pounds is the smallest I can find. That's a lot worms and to much for me to spend on worms.Although I haven't setup a 'dirt' tank, I've done a fair amount of research. Dustin recommends Miracle Grow Organic potting soil. I worry that many potting soils have peat, perlite, vermiculite and/or just too much organic matter. I think you're better off with plain top soil or mineralized top soil.
Although you can plant right away, be prepared to do several water changes before you get things settled and it's not uncommon to fight an algae bloom in the first few weeks. Hold off adding fish until the tank is stable. Don't neglect 'wild life' in the substrate as Malaysian Trumpet Snails and California Black Worms will be an asset.
Sorry, I also only find mostly bulk suppliers and only one offering 3/4 lb @ $40~. I'm guessing there isn't much demand to promote direct hobbyist sales - need something like 1/2lb for about $20. I've done business with Ken - The WormMan for Redworms...He lists California black worms for $38/1lb. I'd suggest sending e-mail asking if he sell a lower quantity, but I see his website shows a stock of zero. He's in NJ so he's a reseller and maybe only has them 'in season'. (then again, 1/2lb has got to be 500+ worms when to seed a tank, 100~ or so is likely plenty...(and then comes the challenge of getting them into the substrate without being gobbled up by the stock - I imagine even with the cover of darkness, this can be tough.)Have you seen where you can get Live black worms @? I would love to have some but in small amounts. 3/4 pounds is the smallest I can find. That's a lot worms and to much for me to spend on worms.