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PostPosted: Nov 11th, '06, 09:24 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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People keep saying its addictive - a nicer word than calling us maniacs :geek:

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PostPosted: Nov 14th, '06, 09:58 
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Ah....bargain shopping. I just got a really nice deal on some expanded clay pellets. I've put my name in for 500L, and should be able to pick it up Wednesday. I was concerned about the weight of gravel in the sunroom, and was very excited to find a local hydroponics shop to supply clay pellets without paying shipping. I'm also going to snag some very nice hydroponics programmable timers from the same guy. Pumps are ordered, and I've arranged to take all next week off. Hmmm...what to do with all that time.... :twisted:

I also exchanged emails with a hatchery about an hour away. They will do small orders, and should have yellow perch in the spring. I think these are smaller than Oz perches; they are considered eating-size at 0.5 pounds (.25 kg). They should grow out in one year. So the plan is to get cycled up over the winter with the goldfish, and be ready when the hatchery has perch fingerlings. It sounds like yellow perch spawn only once a year.

--Janet

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PostPosted: Nov 14th, '06, 10:04 
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Sounds like very exciting times ahead... Keep showing those pics when you get every thing organised during you holiday. OR was the :twisted: meaning you are going away to some tropical island 8) to forget about this obsession we all have for a while :D


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PostPosted: Nov 14th, '06, 20:57 
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watch out for the expanded clay pellets if you intend to flood and drain, i learnt the hard way, Anything other than lettuce and strawberries in mine ended up on a 45d angle :( Fine for cont. flow, but they become far too light when flooded. I've gone to gravel since i F&D

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PostPosted: Nov 14th, '06, 21:02 
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Eeek! Floating pellets would be bad. Maybe if I put gravel on top of a layer of pellets? I am planning on F&D.

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PostPosted: Nov 14th, '06, 21:08 
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Yhe, i was a clay pellet nazi, but i've come over to the mainstream side now. Never was a conformist. LOL

Dunno about layering.

Sorry for the bad news. It also takes quite a few days of soaking for them not to actually FLOAT!

Keep them for a cont. flow system, or net pots in a nft / dwc system that you'll no doubt plan and construct before long :)

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PostPosted: Nov 14th, '06, 21:10 
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Jennet we want pics!!!!!!!!!!!!

where are the pics?

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PostPosted: Nov 14th, '06, 21:30 
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Whew! I just called the Hydroponics store and cut my order of expanded clay by two thirds. (I had my husband test some pellets that had been in the continuous flow setup for a couple weeks, and yes, they still floated.) The guy at the hydroponics store says if you don't overfill the bed with water, the pellets won't float, but I'm still dubious. What I'm going to do is fill one bed with the clay pellets and go ahead and see how things behave. If everything is floating away, I will pull out the pellets, distribute them in the bottoms of all the beds, and fill the rest with gravel. Thanks for the warning, Steve!!!! :D :D

Don't worry CB--I will show off some pictures after things get a little further.

--Janet.

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PostPosted: Nov 14th, '06, 21:43 
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If you water log them then they'll sink (most of them) but because they are composed of so much "empty space" tey will have nearly the same weight as the water. And becasue in a F&D they will be out of water as much as in water then even if you water log them they'll go back to floating.

I layed baout 1 inch or so of them in the bottom of my tub and then filled over them with gravel. Am keeping the rest for other experiments :)

I've seen them support great plant weights in a cont. flow application, but thier not for F&D IMHO

Glad to see hanging around here saved you from a great deal of greif :)

Your hydro guy must be cursing ;)
Steve

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PostPosted: Nov 14th, '06, 21:54 
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Wow, did you ever save me some grief, Steve. And some $$$. Regular gravel is so much cheaper. Do you have a gravel preference? Size and shape? I've seen a reference to "bean gravel" somewhere here. We don't have "bean gravel", but we have "pea gravel". I can get either rounded stone shape or broken stone shape in various sizes.

--Janet.

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PostPosted: Nov 14th, '06, 22:06 
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Hi Janet:
Pea gravel like 1/4" rounded edges is nice.

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PostPosted: Nov 14th, '06, 22:11 
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janetpelletier wrote:
Eeek! Floating pellets would be bad. Maybe if I put gravel on top of a layer of pellets? I am planning on F&D.


Janet, I have a 50/50 mixture of exp clay and gravel in one of my beds and it performs well, and is much lighter (as I realised when repositioning the system) than the 100% gravel ones - with larger heavier plants it may be problematic though.


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PostPosted: Nov 14th, '06, 22:39 
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i used gravel "screening" will check on size in the morning. Oh, it IS the morning...........1:36am :shock: good night!

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PostPosted: Nov 15th, '06, 01:36 
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Janet, I am considering whether to mix gravel 50/50 and perlite. That may also be an option.

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PostPosted: Nov 15th, '06, 02:09 
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OK, for folks who like pictures, here's the plan. I am making this very modular so I can easily expand as time/budget/fish load allow. The pumps will be small, one per grow bed, with targetted bed-fill time of less than an hour. Drain will be only a few minutes via auto-siphon. The beds will fill one at a time in turn to keep fluctuation in water level minimal and to avoid cutting a hole in my floor for an overflow sump. GB media will be expanded clay for the lower 1/3, and gravel for the upper 2/3rds. Fish tank will be 150 gal/570L, 24in/600mm deep with 3 grow beds at 50gal/189L, 12in/300mm deep each. Tank:Bed is 1:1, or maybe more like 1:1.2 since I don't want to fill the tank to the brim. Anticipated yield of fish (yellow perch) is 35lb/16KG liveweight per year, plus veggies, flowers, herbs, and wasabi. (Yes, I have 3 wasabi plants on the way!!! Eat your hearts out!!! :twisted: )

--Janet.


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