2. Sphagnum Moss - Is this the same as Sphagnum Peat Moss? The one I found looks kind of like potting soil
No! I must have messed that detail. Sorry~~! Sphagnum moss and sphagnum peat moss are not the same product. Sphagnum moss is used in the floral industry to line wire baskets and make wreaths. It is the living moss that grows on top of a sphagnum bog. Sphagnum peat moss is used as a soil conditioner by gardeners. Make sure your Sphagnum peat moss is 100% bog moss. Check the lable. This item will lighten your mixture and allow for more air. (Sphagnum peat moss is a natural, organic soil conditioner that regulates moisture and air around
plant roots for ideal
growing conditions.)
3. Builder's Sand - Will any sand do?
No not any sand will do. Some sands have micro size other items. You can get builders sand from any building supply company. Maybe Home Depot, or a Lowes. If you still cannot find it then use play ground sand that would be used in a child's sand box. (Sand give body and weight to your mixture. This helps hold
plants in place. Next it is needed or worms cannot digest anything. They take it it and use it to grind up their food.)
4. Fish Meal - is this the same as Fish Extract? I haven't found Fish Meal. What can be used as a substitute?
No Fish Meal is not Fish extract. Fish meal is fed to live stock. Most feed stores carry this. I use it as it break down faster than other item of the this mixture that would later supply the needed N-P-K. If you cannot find it then increase the mixture I gave you by 1/2 part of Blood meal, and 1 part of bone meal.
Now remember you will need to depend upon the fish and seaweed extract to begin with. Until there is an established micro society that then will eat/ convert this items into
plant food.
If you don't have your own compost then try to find mushroom compost, but no more than 3/4 inch or so. Once you have place it on the top of the soiless mixture that is in your container and have the correct amount then mix it by hand into your soiless mixture. Again do not use this type of compost to replace the pine bark.
Do not add any types of wood chips.
I will track this thread.
Raye
Sorry kid I just realized that somehow my reply did not get completely copied. I have an answer to item #1. First I spent a good hour trying to reply to your question....always timing out. Next the last 6 hours I've been with my mother in an ER room.
Raye
EDIT I removed non-gardening points of view.