Well I did the research on garlic and aloe Vera for aquarium fish. Apparently there is validity in both herbal ingredients used for medicinal purposes. Garlic is slightly more controversial but I will go into Aloe Vera first.
Aloe is a key ingredient in API (Aquarium Pharmaceuticals) Stress Coat for fish and Start Right by Jungle aquarium products. It is good for fish's intestinal in general including intestinal problems and increases fish appetite. It has beneficial amino acids, vitamins and is good for healing external skin injuries and augments the fishe's natural slime coating, which helps protect the fish from injury and bacterial attack.
I wouldn't try commercial concoctions meant for humans as they may have fragrances, alcohol and who knows what. Some pure aloe Vera is available on line and probably at herbal shops but I would check the ingredients and obtain a bottle of Stress Coat or Start Right and see what percentage of Aloe Vera is in the bottle for how much natural aloe to use in your tank if you decide to do that for economy purposes for large amounts of water in water changes for large tanks. I will go into garlic for aquarium fish, tonight or tomorrow, but one lab research er found predominant use of garlic for specific fish diseases in certain species.
I did get another Electric Yellow Lab cichlid. Cute little thing. I stress little. It's about 3" long 1½" tall, where as my established Yellow Lab is almost 5" long by 3" tall. May not sound like much, but there is a substantial size difference and I am a little afraid to put them together, even though Labidochromis caeruleus is fairly non aggressive, including toward their own kind.
I wonder if you or anyone has had experience with mixing a large and small specimen of this particular species, Electric Yellow Lab, aka Labidochromis caeruleus? I will be setting up a tank and transferring fish more the new fish's size, from an older acrylic hexagon tank that I am going to be polishing scratches out of with a Novus polish kit. I will be using gravel medium, filter and water from the established scratched tank for the new tank.
For now I have the new fish in a breeder-like tank in the larger Yellow Lab's aquarium. The two fish are intriqued by each other, through the barrier, but the smaller fish is a little intimidated by the larger fish at times. I have rocks and plant cover in it's enclosure for it to feel secure. I may let them mix it up for a while under my care. I will probably put it in the new tank with fish it's own size, some cories, and killifish, until it grows some. I may put the Yellow Labs together for observed visits occasionally. I may even order one closer to size if I can from my friend at a different fish store. I like this attractive and amiable species well enough to have a few among my tanks.