Nursery System

Two 8 foot fiberglass troughs, a 50 gallon rubbermaid stock tank, an Aquaultraviolet Ultima 1000 bead filter and some sand.

DIY Ultraviolet Sterilizer for Japanese Import system

I am building this unit into the supply manifold for the new system.  It will have two 65 watt UV bulbs and run on emperor aquatic ballasts.

It will be very similar in design to this unit but instead of a U shape vessel it will be a more linear design.  http://goldfishgarage.blogspot.com/2011/02/diy-130-watts-2-x-65-watts-uv.html

From paper to reality

Ready to install

Installed and ready to Zap the water

Polycarbonate sleeve support

The dry end

Sleeve support, spacer and fernco boot

The End

Freak Snow Storm Damages Hatchery Tank Filtration

On March 23 we got our first and last snow of the year. http://www.kval.com/news/local/A-truly-historic-spring-snowstorm-for-Eugene--143698986.html
No one was really expecting the snow but 7.5 inches fell at the airport and closer to 10 here in the hills. A Douglas Fir limb landed on the hatchery tank system's zapp pure uv breaking the clear union threads that attach and draining the system. This caused two tanks to completely drain. It was last years Bristol Shubunkin (Parker strain) and the late summer Matuyama x Itoh that had been raised and over wintered out side. They were high and dry for possible a day. Good thing they were cold as most revived but are now succumbing to their injuries. The Ranchu were moved inside with the bristols soon to follow.

Fortunately the system was out together with ferncos. A few twists of a nut driver and a scrap price of two ich pipe the zapp pure was bypassed.

Hatchery Tank Standpipe

The tanks have a built in drain nipple to receive the primary and secondary standpipes.  This system was old and set up for flow through so leaks were to likely to be used in recirc.  From the bottom a 4"x2" Fernco was attached to the fiberglass nipple.  A two inch pipe 8 inches long with a couple glued to the internal side was passed through the fernco.  

The foam expanded and made the standpipe couple fitting very sturdy.  The small sump around the couple is to receive the original aluminum secondary standpipe that allows for bottom collection.  The couple was set to be even with the bottom of the tank and Great Stuff expanding foam was used to fill the space between  the 2" pipe and the inside of the fiberglass nipple.  The couple even with the floor is the new receptacle for the 2 inch primary standpipe.

The primary standpipe is 28 inches tall with the top 3 inches slotted to retain the fish to a depth of 24 inches.

The secondary standpipe is aluminum and in need of a new powder coating.  This stand pipe is installed for bottom collection of water and solids for heavy loaded tanks.

A close up of the secondary standpipe base showing the intake holes even with the floor of the tank.  The water will be flown tangentially creating a circular flow bringing the solids to the center for better solids capture at lower flows.

See the whole project here.

Hatchery Tank Drains

These are subcomponents of the drain manifold for the hatchery tanks. Rigid PVC and flexible Fernco tees were alternated for ease of installation. Appropriate lengths of pipe will be glued into the PVC and attached to the ferncos. The ferncos add expense but save in the long run for ease of repair and reconfiguration.

The 2" couple is slid up to attach to the bottom of the tank. The fernco tee attaches the tank to the main drain line back to filter.

Same set up with a PVC tee that lengths of pipe were glued into to create the drain line.

4"x2" Fernco attached to the fiberglass nipple on the bottom of the tank, 2" pvc standpipe projecting through the bottom, with a 2" Fernco couple attaching to the elbow and Fernco Tee.

A look at the PVC version. The PVC and Fernco tees are alternated every other tank.

See the whole project here.

External standpipe

This is a 2 inch external standpipe for a row of 5x 275 gallon pallet tanks (see: Adding Capacity). The tanks are plumbed out their bottom drain to a 2 inch main then to this stand pipe to set water level and on to filtration via a 50 foot 3 inch line. With the valve closed the water flows up and around setting the water level. Open the valve and the tanks drain. Assembled with repurposed parts (hence the extra couples).  Installed to the line with fernco couples.