Standpipe surrounds

I got the standpipe surrounds made today – they keep the shale and plant roots away from the standpipe and bell siphon.   Holes are at the bottom only to ensure that water near the bottom drains, as opposed to water coming in the top draining and leaving stale water further below.   That’s important because we need re-oxygenated water or else the roots will rot.   Well, that’s more the case in a constant flood system, not so much in a flood and drain one like this one is supposed to be, but still it gives me the option to take the bell out and go constant flood if desired…

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