GrahamC Posted October 28, 2012 Report Share Posted October 28, 2012 Still trying to get this working first pass at the radial flow filter .. riser in the top shub courtesy of Carine and then riser now shrouded in a drain pipe so that I have a radial flow filter ( I think ). This also shows the bell siphon kicking off to drain the lower shub. currently the bath tub below the paved area is holding 6 goldfish, refugees from a Victoria Uni science experiment. But nitrate levels are 0 so I need to add more fish, or, remove the duck weed in that bath so I can start to feed the plants. Quote Link to comment Share on other sites More sharing options...
F15hguy Posted October 28, 2012 Report Share Posted October 28, 2012 had to help a guy building a similar setup today to grow ""Vegetables"" maybe a small piece of polythene to prevent any splashes but looking good Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 28, 2012 Author Report Share Posted October 28, 2012 The waterfall is for aeration of the water, and possibly nitrate removal using algae if I get too many nitrates. I need to channel the waterfall to the centre so I don't lose any water on the sides. I was thinking of using polycarbonate but polythene sheet around the waterfall to prevent loss from Wellington wind sounds good. I've got my polystyrene raft that I need to cut up to fit the top of the upper shub, and need to drill the 2" holes for the net pots if I can find anyone who sells them! My endeavour is strictly veggies, not growing any plants to make rope or clothing! Quote Link to comment Share on other sites More sharing options...
F15hguy Posted October 28, 2012 Report Share Posted October 28, 2012 shouldn't the nitrates be removed before the waterfall part?? Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 28, 2012 Author Report Share Posted October 28, 2012 the radial flow filter ( the upper shub ) removes the fish solids only. Any plants in the DWC might remove some, but the intention is really to provide nitrates for the grow bed. If I have too many nitrates then this might help. If I don't have enough I can cover the waterfall with an opaque sheet to prevent light falling on the waterfall. Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 30, 2012 Author Report Share Posted October 30, 2012 I got the raft in place now, and am restricting the waterfall to the centre so that I don't lose too much down the sides. Still waiting for a source of 2 inch net pots so I have not drilled the holes yet. The system is working on a 2 hourly flood and drain cycle lasting 2.5 minutes, and hourly at mid day ( timer only has 8 settings ). There's an air gap of about an inch below the styrofoam raft for air to circulate and reach the oxygen roots. Quote Link to comment Share on other sites More sharing options...
Sophia Posted October 30, 2012 Report Share Posted October 30, 2012 Don't forget the noise reducer so MrsC doesn't turn the pump off on you when she hears it burbling..... :sage: Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 30, 2012 Author Report Share Posted October 30, 2012 Yeah, it does that a bit ... like flushing a loo. But it's outside so can't hear it from inside. Quote Link to comment Share on other sites More sharing options...
Sophia Posted October 30, 2012 Report Share Posted October 30, 2012 what if she goes outside? :nilly: Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 30, 2012 Author Report Share Posted October 30, 2012 I'll lock the door so she can't. Quote Link to comment Share on other sites More sharing options...
blueether Posted October 30, 2012 Report Share Posted October 30, 2012 I'll lock the door so she can't get back in.there fixed that small typo for you Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 30, 2012 Author Report Share Posted October 30, 2012 Oh no .. she'd turn off the pumps and dismantle the whole thing! Better to keep her inside and not out. Since the whole thing is under the clothesline, I am offering to hang out the washing!! Quote Link to comment Share on other sites More sharing options...
Barnacle Posted November 4, 2012 Report Share Posted November 4, 2012 Oh no .. she'd turn off the pumps and dismantle the whole thing! Better to keep her inside and not out. Since the whole thing is under the clothesline, I am offering to hang out the washing!! :facepalm: Quote Link to comment Share on other sites More sharing options...
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