I attached a pic of a water setup I have in mind. Would this work if I were to go away for 7 days? Thanks.

If I understand what you are doing you have a couple of problems. I am guessing that the return flow tube is going to work on the siphon principal. The pump flow is probably going to exceed the return flow of the siphon and flood the tank. If you could get the flow rate of the input and output to match EXACTLY you would still have the danger of the return tube being knocked out of the water, breaking the suction and again the pump flooding your tank. The simplest thing to do is to go to a farm supply store and get a waterer for baby chicks. It is essentially a jar turned upside down in a dish and the water in the jar feeds into the dish as needed.

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Merlin,
What's Life Without A Little Magic!

I don't know if this would work for you, but what I did when I left for Five days was put a large tub of water in the corner and add an aquarium air pump, it just kept the water from becoming stagnant, i put a diffusor stone on too! But if your low on room just do as merlin said, you might even be able to make one if your cheap like me!
-Chytrid Fungus

That's what I was thinking about, wasn't sure though, thanks for confirming. I am just going to make my own baby chick waterer like this, but it will have a sturdier container (tupperware), larger bottle (it has to last 7 days), and duct tape to secure the bottle in the container and secure the whole thing to the enclosure wall. Also, how many mealworms would I need to leave in a dish so that they would last 7 days? I was thinking 50. Is there any chance that the mealworms would die in those 7 days? Thanks again.

How much water was in the container? How large was the container? How much was left when you got back? Mine might have to be a slight bit larger, since I will be gone for 2 more days than you were.

You mentioned a diffusor stone. Would I need one for my "homemade chick/gecko waterer?" Oh, and Merlin, that's an amazing number of posts considering the short length of time that this forum has been open. I am embarrassed now, jk, lol .

erbo,
If you have the water dripping out, like with the chick container: its covered, contained, and not completely motionless. As for me I had a half gallon tupperware in the corner, and I put the air pump in with a diffusor stone. I dont know if it would have even made a difference truthfully, but the water was still fresh and from what I could tell drinkable. Water, especially in an enclosure tends to get somewhat viscous and develop a top sludge layer, the air pump simply kept it moving and prevented the build up. When I got home there was little more than a cup of water, the air pump obviously accelerated the evaporation.
So to organize all this confusion^^^ no an air pump for a water dripper like you are planning would not be necessary! Everything should be fine, i would do a test run, to make sure there are no leaks or other problems.
-Chytrid Fungus

How many mealies do you recommend for me to put in it's dish before I leave? I was thinking that 50 would be sufficent - about 7 per day. Is there any chance the mealies would die by the end of those 7 days?

Maybe try superworms, I don't know what kind of meal plan you have going, but superworms (about 4$ for 50) live for three weeks unrefrigerated. So maybe they will live the entire time your gone, Im not sure though!
-Chytrid Fungus

Hello,

Merlins suggestion is recommended. Here is a pic of 2 waterers that would last you the entire 7 days:



or

Both of these would work fine for 7 days. Both can be purchased at Petco. Also,mealworms wouldn't die if they are left in the tank for 7 days however,they may begin pupation.

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