Where ARE THE CHEAPEST NUTRIENTS online??

I'm almost out of my current nutrients and am looking to purchase online this time. Price and the cost of shipping are major considerations. I was thinking of trying the Lucas method on the next grow. But lack RO water and not to thrilled to purchase the gear necessary for RO. We have well water with 100PPM and a PH of 6.7 out of the tap. I'm also looking for a flower enhancer So, I guess the question is...Who sells the cheapest nutes online?? Thank you in advance.

The lucas formula will work fine with 100ppm water.

www.ehydroponics.com is one of the cheapest I've seen. Prices change, promos and stuff. Sometimes they are really cheap sometimes they are par for the course. Don't get stuck on price of the bottle. Online some companies will stick ya with shipping and handling cost that pad their profits. So, they might have a 10.00 bottle that another guy does for 15 but they charge you 10 for shipping when the other guy only charges you 4. In that case the guy with the larger price will get it to your door for cheaper total.

100ppm water isn't too bad. Sort of middle of the road.