This is the most economical setup I could come up with that lasts indefinitely in Seeing Stars. Because it isn't perfectly clear with all the zombies, there are two columns of Spikerocks on the right.
By my account, this setup takes 5575 sun.
Update: I leave this running overnight every night to test it, and the zombies did eat one of the magnets last night, so it wouldn't run indefinitely without maintenance. KennKong 17:05, February 4, 2011 (UTC)Read more >
In my current Survival Endless setup (sorry, no pic), I have (from right to left) three Gloom-shrooms, an Ice-melon and a Cattail. I regularly have to replace the Pumpkin around the Cattail, but I never see anything eating it! Do zombies surface that far back, can Snorkel Zombies swim under the other stuff, or can Dolphin Zombies jump that far?
[Updated 2/1] The configuration shown here is improved, and appears to have solved the problem. I have upgraded the Fume-shroom that was in rows 2 and 5, column 6 to a Gloom-shroom. The extra "backdraft" from that seems to be keeping the Pumpkins around the Cattails healthy.
However, I still don't what was eating them, as I have yet to see any zombies make it that far down the pool.Read more >