Liquid Kelp With Calcium

I was at Tractor Supply and seen this Kelp Calcium fertilizer it is 39.00 for 2 1/2 gallons and is organic...it is 5-0-0 and 2% calcium

here is some info on it http://www.tractorsupply.com/gifts-home/category-maintenance-warehouse/other-ag-chemicals/organic-labs-veggie-maker-kelp-calcium-fertilizer-2-1-2-gal--1013108

I got some for my veggie garden but was wondering if it would benefit my ladies in the greenhouse...I have been useing Neptunes Fish and seaweed on them and they are doing great...this product is a lot cheaper if it will work..

Thanks for any input you have

will post pictures soon...have Amnesia haze...Blue Cheese...White Widow..Klasakonva...Sweet Grapefruit...Ak47 and Trainwreck...

If you have it, try it out on one plant and see how it does, compared to the Neptune on the rest.

Wet