If the goby did not completely wipe out the population then there is a big chance the pods
will make a resurgance on their own. One way to boost their comeback would be to purchase a detravore kit. There are online stores that sell these. THey are intended to give your sand bed a boost as well as to add some diversity to your sand bed population.
If you know a fellow reeefer in your area asking to swap a lb of live sand is a good way to increase your diversity aswell.
PLEASE PLEASE don't tell me I wasted alot of money on that live sand for nothing.
I dont think you wasted your money on the live sand. It did give you a head start with your bactera population. Personally my bet is that your pods
and worms came from your LR
vs the bagged live sand. Unless they bagged it there it probably was just bactera laden sand.
On your goby. Whats it look like? Whats its coloration?
How big is your tank? If you have a large tank and a single goby then IMO
you would be ok as the goby would have a hard time eating ALL the fauna in your sand bed. Now if you have a small tank then the goby if it is a sand sifter really could put a big dent on your sand bed population. Maybe you could convert that 20 gal
sump you dont want to bother with any more into a 20 gal
refugium. This would aid in keeping your fauna population as it would provide them a safe haven to live and reproduce. Some would naturally get back into the main tank thru the return lines.