mistakes r crucial
Thu Nov 09, 2006, 09:11 PM
Hi all,
For a long time we've had a degassing chamber on our wish list but with the amount of water we run the cost of a commercial unit (up around $3000 per unit) has always put it on the back burner. We decided to have a go at making them ourselves and we're pretty happy with the end result. Thought I would post them up here as someone might have a few ideas on how we can improve them. They cost us less than $300 each so a huge saving.
The sump is 400 litres in the grow out and it has 5 trays of different media with the return sat on the top tray. There are 5 bins above the return with a spinning arm in the top one which pushes water through an 800 micron filter sock, dacron and Japanese matting (course green stuff). We've used trawler net in two of the bins for media and gutter guard and bio balls in the others. Drilling 300 small holes in 9 bins was great fun, not! 2700 holes later I never want to see a drill bit again.
As we have a flow issue with our grow out system (29,000 litre an hour pump and it still won't pump water real well to the third tier) we've plumbed a 10,000 litre an hour pump into the sump so the water returns from the system, down through the 5 trays of media and the new pump then takes the water from the sump up to the spinning arm and back down through the tower.
The tower on the breeding system is almost identical but because we don't have any pressure issues we've split the plumbing from the sump and taken half the water back up to the tower and down again, if that makes sense. If anyone can suggest any improvements we'd love to hear them.
Cheers
MAC
For a long time we've had a degassing chamber on our wish list but with the amount of water we run the cost of a commercial unit (up around $3000 per unit) has always put it on the back burner. We decided to have a go at making them ourselves and we're pretty happy with the end result. Thought I would post them up here as someone might have a few ideas on how we can improve them. They cost us less than $300 each so a huge saving.
The sump is 400 litres in the grow out and it has 5 trays of different media with the return sat on the top tray. There are 5 bins above the return with a spinning arm in the top one which pushes water through an 800 micron filter sock, dacron and Japanese matting (course green stuff). We've used trawler net in two of the bins for media and gutter guard and bio balls in the others. Drilling 300 small holes in 9 bins was great fun, not! 2700 holes later I never want to see a drill bit again.
As we have a flow issue with our grow out system (29,000 litre an hour pump and it still won't pump water real well to the third tier) we've plumbed a 10,000 litre an hour pump into the sump so the water returns from the system, down through the 5 trays of media and the new pump then takes the water from the sump up to the spinning arm and back down through the tower.
The tower on the breeding system is almost identical but because we don't have any pressure issues we've split the plumbing from the sump and taken half the water back up to the tower and down again, if that makes sense. If anyone can suggest any improvements we'd love to hear them.
Cheers
MAC