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@Jason - Thanks for getting back to me about the bunk feeders.
Indeed gravel is heavy. I have begun to use pumice and like it a lot.
It's heavier than water but very light and easy to work in.
The lower part of this blog post will describe my experience with pumice.
The bunk feeders have worked out well for us. We have had very good success with tomatoes, green onions, romaine lettuce, and basil. We have had marginal luck with peppers.
They seem to be deep enough for those things. They are pretty strong. All 6 of ours have been in use for over a year and no major problems. They do sag a little with the weight of the rocks, but that hasn't seemed to affect anything. I have noticed (on one bed) a small tear in the plastic where he bolt goes through to hold it to the frame, but it doesn't seem to be growing yet.
I would use these again. We have different sized gravel in some of the grow beds. We seem to prefer the pea gravel over the river gravel.
Jason, I'm going to expand my system and I'm wondering how the bunk feeders have worked out for you.
Are they deep enough?
Are the strong enough?
What would you do differently?
Thanks. They are not rubbermaid. They are actually bunk feeders for cattle. The liner is a hard plastic, the frames are galvanized. You can purchase replacement liners, if they fail. I purchased them at a local farm store. One of my goals for this system was to build it with all "off-the-shelf" products.
Nice grow beds! Are they also Rubber Maid? Did you have to fabricate the stands?
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