The siphon could keep going indefinitely as long as the end of the hose is lower than the start and both are in the water. That way there's no need to have pipes between the tanks, the water gets mixed and oxygenated simultaneously (if mildly) and no pumps! All the tanks would need to have essentially the same water level and it's a much larger system, but well worth exploring.
Caitlin Mac Shim wrote:But if you COULD get it to push uphill, then the trickle from the hose could also help oxygenate the water a bit...
Caitlin Mac Shim wrote:What do you reckon is your main goal with the system? Like, do you hope you grow fish/crustaceans to eat (human consumption), or for feed (chickens/other) or plants for human consumption or animal feed, or is the idea to primarily grow plants to feed the fish, or all of these things? Or is it more a case of figuring out if a passive system could operate and then growing whatever works?
Caitlin Mac Shim wrote:Could something using gravity work? Like a drain in the bottom of the tank, which you can release to flush out some poo heavy water from the bottom, and the drop in water level allows fresh water to flow in at the top? As long as you didn’t replace too much water at once it shouldn’t be too much of a shock to the fish.
It’s not achieving circulation (without coming up with a way to clean and return the water to the top), however it would give you nutrient heavy water to use somewhere else, and if you had enough water catchment to feed the system, then the re-circulation of cleaned water might not be so necessary. Would depend a lot on water availability I guess. Aquaponics are often utilised to address water scarcity, but if you have plenty you could set it up as a kind of fertiliser production system?
The solar and wind are part of the Texas grid. Wind systems automatically stop when a) the wind speeds get too high or b) the blades are unbalanced (as from ice on the blades). These are safety precautions which work against the grid when conditions are not ideal. The solar plants are covered with snow. They also had a nuclear plant go offline because it hadn't been winterized. So a few coal and NG plants are supporting the whole state at the moment.
Stacie Kim wrote:
As aside ... I know Texas has a tremendous amount of wind power that's been installed in the last decade. I wonder if the operators of those windfarms are tied to the Texas grid or if they have chosen to tie to the national grid?
I am under the assumption that Texas wind farms are tied to the Texas grid. However, the crazy cold temps have frozen the windmills. They are nonoperational right now.
I am using this scenario as a sign that we cannot depend on others for our energy needs. We need to take responsibility for our own household. Help each other if we can, but depend on no one.
EDIT: Here is the interview: it's the first story of the newscast: https://www.youtube.com/watch?v=DcJ7hohtsAE
Which is actually something I've been considering. Depending on the circumstances (LOTS of different issues involved!) that could be part of their food.
Caitlin Mac Shim wrote:I think the reason the fish are fenced away from the plants is cause they can have a tendency to eat the roots.
I thought that's what I said. Two tanks, tops inverted with plants on them, roots down into the same water the fish are in. I guess I wasn't clear enough. Not planning on "fencing" them away from each other, though. Not sure what you mean by that. One big tank split down the middle? I'm planning on linking two 250 or 300 gallon IBC totes, so technically room for 10-20 full sized fish. The fish will only be in one tank, except for the cleaner fish. Both will have plant rafts and I'll try to choose plants that put oxygen into the water as well as choosing fish that can eat plant roots.
C. Letellier wrote:
Now your other option is eliminate pumping totally, grow plants in the top half and fish in the lower half and fence them away from each other. There are a number of you tube videos on this type of system also. Most of these systems are bigger tanks though so one end of the tank can be devoted to letting the fish surface and feed etc.