Thanks for the kind words. I think everyone thinks they can be a photographer in this day and age but it really takes a good idea and a lot of practice to be really good. That's why I'm so impressed with my friend's work and glad to be helping him. I just fill in with the "make sure you have...
It's been some time since I've been to these forums. My tank has been reduced to low/no maintenance plants and fish that are seemingly indestructible.
There's a reason I've been so neglectful of the fish tanks. I've been helping one of my friends from high school with his wedding photography...
As long as you're not putting a lot of fish into the quarantine tank at once, I wouldn't even bother with a filter. Since you will probably be keeping an eye on the tank daily anyway, you can take out half a gallon a day without bothering the fish too much.
That Pleco, if it's a common one, is going to outgrow that tank at some point by itself. Just keep that in mind. As far as overstocking, I don't think the water quality is your issue. You are going to be taking away the swimming room of your fish.
On a tank that small, I would honestly not go with much on the plants. You could really get away with stem plants that will grow up tall nicely without addition of lighting possibly. I'm not familiar with the Biube lighting though.
Unfortunately for the fish, you can't change someone's mind. If they don't want to listen to you, that's too bad. Sometimes you have to wash your hands of the whole thing for your own sanity. Just let your neighbor know if there are questions, you are available.
Yes, there are raccoons in So Cal, depending on where you are of course. The more city you are, the less likely you are to have them. I have them here in Rancho Palos Verdes.
Bleach works well. You can rinse it and leave it in the sun. It will turn to salts if anything is left behind. Rinse again thoroughly. Nothing beats elbow grease.
Barbs tend to be nippy, even the small ones, like the Cherry Barbs. It varies from fish to fish but if your barbs are that aggressive, removing them to a tank where they aren't going to be nippy is the only answer unfortunately.
I am not at all experience at shipping fish, but SAE's are readily available at a branch of stores here in Southern California called Pacific Reef. They're only $2.00. They're mislabeled at Siamese Flying Foxes, but they're definitely SAE's. So if you know anyone down in this area that you trust...
I have a 100 gallon barrel that I have goldfish. On the larger one, if you're not replacing more than half of the water, it won't matter to them, especially when you use a hose. The water pressure will mix things up pretty well. The temperature drop will be like a rain.