Seaweed will give your plant much more nutrition(if you want to call it that) than worm tea.
To give you a back round of what worn tea is used for... Its used to feed the roots of plants that use potting soil mainly... It adds and feeds the mycorrhizal fungi and beneficial bacteria at the root zone. It has little useful nutrition to plants. Different worms will give you different NPK's.
If you use physan, tap water or any product that has ingredients used to kill bacteria or fungus with worn tea, or any product that has natural beneficial ingredients or even water separately. You void the any benefits the "fertilizer" has.
Secondly..... Wormtea, seaweed, or fish fertilizers aren't complete fertilizers as Tucker pointed out. Seaweed is good macro fertilizer and works great when added with Ca Nitrate, but I don't recommend that you use that combo every feed. I recommend you purchase some MSU and use @ 1/4 rate. You need a fertilizer that has NPK along with Ca, Mg and other micro and macro ingredients. If you want to use worm tea and water with tap than I recommend a KDF or carbon block filters.
What problems are you have with your seedlings?
I have never used superthrive because of the snake oil effect.
Last edited by keithrs; 12-02-2011 at 01:34 AM..
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