Seaweed concentrate is a sellers job on the buyer. you can get seaweed super cheap. just have to look on the web in the right place. try Starwest Botanicals, in california. you also need to look for Kelp on the google searches.

hard to use their web site but it is there.

SKU 201680-41
ITEM KELP GRANULES ATLANTIC 1 lb.
ASCOPHYLLUM NODOSUM
Price $4.57

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SKU 201680-51
ITEM KELP POWDER ATLANTIC 1 lb.
ASCOPHYLLUM NODOSUM
Price $4.81

it is listed under
Herbs and Spices 1 lb.

I think the one pound is good for hundreds of gallons. not sure but you dont have to measure it. or ask them how to make the equivalent seaweed concentrate.

good luck.

OK the exact same product is packaged in 30 gram bags. this is one ounce. since one ounce is 28.35 grams.

http://www.burpee.com/shopping/product/detailmain.jsp?itemID=4780&itemType=PRODUCT&iProductID=4780

Territorial Seeds sells the pack for $7.50 but Burpee sells it for only $5.95 that is for one ounce. but the link I give you sells it for about $4.50 a pound. I know these have to be the exact same product because they are both North Atlantic Kelp and how many kelp processing plants are there going to be. they are processing the same seaweed.

One big advantage to the Sea Magic package is that it says you can use it to make 30 gallons. so the pound must be good for about 16 times 30 or 480 gallons. so at $4.80 per 480 gallons that comes to 1 cent per gallon.

I would actually make it a bit stronger. it is so low priced.

now the liquid type seaweed I believe says to use a tablespoon per gallon water. that is 3 tablespoons to an ounce and 128 ounces to gallon gives 375 gallons per gallon of seaweed concentrate which costs about $25 to $30. and must be equivalent to the 480 gallons made by one pound of powder seaweed at $4.80

So I hope I saved you some money if you use Seaweed.

Peace

O Nut

say ric, if you are from oregon, are you near salt water? if so, then simply go pick some up at the beach, throw it in a bucket of water, let it sit for a week, and water with that...violoa fertilized with lots of trace elements---good luck---bob