We've been conducting actual independent HPA research and to date we've been using standard, off the shelf liquid nutrients. We have not been sponsored by any company and have purchased all products through standard retail methods. We've used Advanced, Botanicare and House & Garden to date. All the products we've used have grown high quality produce. We've done no control testing to compare performance. So I can't offer any comments on which nutrient performs better. They've all done great. What I can comment on is the residue and filter maintainence which is most likely the more important aspect in a HPA system.
Advanced Sensi with PH Perfect A&B and Botanicare Cal-Mag using RO water. We never had to use any buffers, the PH was always stable. This combination fouled our screen and media filters and the screens had to be cleaned weekly. The hoses for the air stones, PH, temp and EC probes all developed a feathery biological build up. The reserviors developed a slight light brown surface scum build up. Our aeroponic chambers also had the same build up. We had no nozzle issues, but did have to clean filters often.
Botanicare Pure Blend Pro Grow Single Part, Liquid Karma and Cal-Mag using RO water. We needed to use PH buffers, but the PH was relatively stable once set. This combination fouled our screens, but not as often as the Advanced Nutrients. The hoses and probes did not develop any biologicial build up, but did develop a heavy scum. The reserviors also developed a heavier scum build up and our aero chambers developed a quite a bit of biological build up. We also had no nozzle problems and the Botanicare seemed to require less mechanical maintainence, but did require a little more effort when cleaning the tanks and trays.
House and Garden Hydro A&B and Botanicare Cal-Mag using RO water. This mixture requires substantialy more base buffering than the Botanicare nutrients, but PH is stable once set. So far we have had ZERO filter issues and very little scum build up. We haven't started our actual grow yet, but we've been running the system for about 10 days just conducting system tests. So we don't have long term results yet, but so far the H&G line is running far more cleaner than AN or Botanicare. We have plans to also test Canna and GH in future grows.
Our Test Facility..
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