Help with Organic Growing (Organicare Pure Granular)

Hello all,
First post here have a few questions regarding organic growing. I am 100% use to synthetic fertilizers, specifically advanced nutes. I was thinking of going the Organicare Pure Granular Grow and Bloom route. If anyone has any experience with these products I would love to hear it. I was going to use a soilless mixture of Ocean Forest and coco coir. As per the directions I will be mixing the Granular Grow in with the soilless media, and then replying as a topdressing every two weeks. When I transplant into the final largest pot I will mix the Granular Bloom in with the soilless media, and then reapply every two weeks as a top dressing. My question is this, when using advanced nutrients I always used Overdrive at the end of flowering. I don't know what other people have experienced, but I ALWAYS noticed a resurgence of growth after feeding with a solution of Overdrive. Upon further reading on the product, I found that a lot of the resurgence of growth had to do with the addition of nitrogen in Overdrive. But it was the specific form of nitrogen that did this, nitrate. I was wondering does anyone know a good organic source of nitrate? I would like to add a bit of nitrate toward the end of my flowering cycle as I use to do with the Overdrive. I know it won't be exactly the same, but I feel like the addition of nitrate toward the end still may benefit and help get that extra push when the plants are cycling down on growth. Thanks for the help a head of time,
GTS

 

Thanks I'll definitely do that, just found this product called Chilean Nitrate (Chilean Nitrate |). Think I'll look into this more as well. It says the product is OMRI certified. IF anyone has any experience with Chilean Nitrate I would love to hear about it too. Thanks again,
GTS

 

So then mix into the media every time I transplant, and only mix into the top 2 inches of media once a month? Thanks for the suggestion Synergylane. Have you ever use guano? I use to work at a hydroponic store, and some of the organic guys would rave about guano.