So I read that Clown Goby eggs take about 4 days to hatch, then another 45 days to complete metamorphosis. All I have food wise that might work for them is frozen rotifers. They are buried up in the candy cane (as shown) and away from any powerheads and major flow.
I'm wondering if it's worth trying to get the quarantine tank up and going? I'll still have to have a powerhead in that and all I have is a big sponge filter for it.
From what I've heard, raising them may be more than you want to get involved in (I've never attempted it myself). They are going to need live rotifers, like many smaller fish fry. Here's a nice, but brief article about them with a bit more info: http://reefkeeping.com/issues/2002-10/hcs3/index.php