If your friend is new to the hobby it would be nice to keep him interested in it. But i'm afraid once he gets his liquid test kit and establishes what his water change schedule is going to be on that size tank with that stocking, he may run a mile once he discovers the frequency and volume of water changes needed to keep that tank healthy. That bacterial bloom speaks volumes.
Either go way bigger in tank size, which probably isn't going to happen if he's just got this one, or, as mentioned, thin out those goldfish considerably.
He'll probably be relying on you to make the right decisions for him. No pressure then eh?
Either go way bigger in tank size, which probably isn't going to happen if he's just got this one, or, as mentioned, thin out those goldfish considerably.
He'll probably be relying on you to make the right decisions for him. No pressure then eh?