These barrel is cheap and we could make do without any metal frame to hold the growbed. So I got myself another three barrel to make the CRAFTS set for smaller fish.
Growbeds made from 90 cm tub, a size smaller than I normally use and at much cheaper price by almost 1/2. But it is thinner and looks less robust. Water pump is at 2000 Liter/hr all I need is about 1500 Liter/hour but it is not available at the place.
As usual for this set, I need to remove the top cover and make it into an open barrel. It an easy task making use of a jigsaw.
Making holes and access for overflow and pump access.
Those access hole I just cut a half moon to ensure I got maximum water from these barrel to use. The overflow from Return Tank into Feeder Tank is using 32 mm pvc piping and fittings.
A single 15 mm PVC pipe and fitting uses as the Feeder Tank overflow since this set is in the open, rain will fill her up to overflow.
All set, and initially I thinking of making it this way with three growbed on top of the barrels. But decide to use only 2 growbed to make it less clustered.
Support beam 1x2 wood, since these will be underneath the growbed it will be protected from rain and shine. Hope it will last longer without any weather proof.
20 mm StrainerBell made for 10 inches growbed, water level will be at 8 inches adjusted using the extender tube. Residual water level is at 1" for this StrainerBell Siphon.
Water inlet is a simple "T" this works well and very easy to maintain the pump. I made a saddle valve on the up tube since the pump is more that it is needed for this two growbed.
Completed set, and letting it cycle for few days before I introduce fish and simple "buffer" plants. Those LECA is from a growbed at the back which been running for about a year. So it will make this CRAFTS set cycle faster.
The 32mm PVC over flow from the Return Tank, murky water due to seasoned LECA.
20 mm StrainerBell Siphon in operation, may need to be tweak to ensure trouble free operation. But so far never missed a beat.
That's it, I will let the set cycle and this unit is for smaller fish to grow before I could mix them with the larger fishes.