How much water?

How much water should I be giving these guys? I usually just test the soil with my finger and see if it's damp. Can you over water the

yes you can over water in soil, seems everyone here that grows in soil says to let it dry then water. But I don't grow in soil so will let someone else answer.

I have also seen people use the pots that have a res and you just fill the res and it feeds from the bottom

Mine has that, never thought about doing that either.

Yes you can easily over water if your soil doesnt have enough perlite enough it.
I grow in soil and i go minimum 2 days before i water again sometimes 3-.4 I like using the finger knuckle in the first inch of soil to see if its dry as a gauge but what I feel really gives you a better judgment of whether your babies are thirsty or not is to weigh out your containers after watering them and then again in 2 days and see how much lighter they have gotten.
Hope this helps

I mean this or something like it http://www.target.com/p/lechuza-classico-color-21-self-watering-planter-slate-matte/-/A-50905802?ref=tgt_adv_XS000000&AFID=google_pla_df&CPNG=PLA_Patio+Garden+Shopping&adgroup=SC_Patio+Garden&LID=700000001170770pgs&network=g&device=c&location=9030970&gclid=Cj0KEQiAk5zEBRD9lfno2dek0tsBEiQAWVKyuI-lW4E5wHGHue5xlxCyvFIilBWEQrRVVE6s7FcKwDMaAtOB8P8HAQ&gclsrc=aw.ds don't put water in the runoff tray just want to make sure we are talking about the same thing don't want you sending me a message about mold or dead plants because your feeding from the runoff tray lol

Ohhh gotcha lol

I use the weight method. Pick the pot up and if it feels light water it just a little. Small seedlings will grow better when the soil is slightly moist, and not cold. Make those roots grow and let them seek the water for themselves and do their job. Use a set of scales and measure weight when first potted because fresh bagged soil is moist enough for growth. Water the top until you get a little run off from the bottom and then leave it under the light for heat. Weigh it every few days until the weight returns to roundabout the original and water again and repeat for a few weeks.