Comment

Comment by John Malone 2 hours ago

With regard to the inputs and outputs of a system, I read somewhere that it's possible to feed the fish on duckweed which is grown in the nutrient-rich fish water.   This would seem to break the 2nd Law of Thermodynamics rather obviously, until I realized that a significant input is that of the sun's energy.   Ahhhh....maybe it IS possible.   Maybe the whole system could be a way of converting solar energy in to food.   It would be super cool if that were true.  

If you think about it long enough, all energy in the world originates from the sun in one way or other, so it's not a totally absurd concept.

Just spit-ballin' here....

Comment by John Malone 2 hours ago

Help : Squash Plants

Several of my squash plants have a weird look to their leaves.  If anyone can tell me what is going on, and how to fix it, I would be very grateful.

Click on the pictures for a full size image.

Comment by Jim Troyer 6 hours ago

you can never get more energy out of a system then you put in because nothing is 100% efficient -  The Second Law of Thermodynamics states that "in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state."

Comment by Sheri Schmeckpeper 8 hours ago

It might be an interesting addition to the diet, and they do breed easily. Bob made a good point; the process of converting guppy food to guppy feeders is bound to produce waste. So unless you can feed your guppies for significantly less than the tilapia, it might not be worth the effort.

Comment by David Schwinghamer 11 hours ago

I just saw it in a video and was wondering if its valuable.

Comment by Bob Campbell 11 hours ago

@David - It does not sound economical to grow one fish to feed another.  I know that is common in a Large Mouth Bass pond, but I don't see how the the protein conversion would yield more than the food you raise the Guppies on.

If you raise guppies for pets then maybe it's a good way to control population.

Comment by Sheri Schmeckpeper 21 hours ago

As in, guppies to feed to the tilapia?  Not I.

Comment by David Schwinghamer 22 hours ago

Has anyone here ever raised guppies for fish food?

Comment by Sheri Schmeckpeper 23 hours ago

It was nice meeting you and Rose last night, Jim!  Keep us posted on how they grow!

Comment by Jim Troyer yesterday

Sheri & Bob - Thanks for the great class last night and the fish, they seem to be happy in their new home!

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