You should really get a algae eater. Some of the alge killers are harmful to the fish.
it really depends on what type of algae. if its green water algae then use and algicide which you can purchase from aquariums. if it's filament algae then get some snail or algae eating fish. the quickest solution is to scrap the algae off yourself.
snails
you kill the algae
Goldfish will feed on the algae and minute organisms found around the weeds.
Algae in a goldfish pond is quite common with an increase in sun (light) and temperature. To try and keep algae to a minimum you will want to look at ways to provide the pond with shade, and regularly change out some of the water for fresh water during the warmer months.
Most likely not. If there are goldfish, then there are definetely going to be predators. Goldfish are small, and one predator could eat about 5 goldfish. It's very unlikely, but possible.
Algae covered the top of the pond. The pond was full of algae.
Some goldfish I guess. It depends on if it is wild or not.
To create a small goldfish pond in your backyard, you will need to choose a suitable location with access to sunlight and shade. Dig a hole for the pond, line it with a pond liner, and add water. Install a pump and filter to keep the water clean and oxygenated. Add aquatic plants and rocks for decoration. Introduce goldfish to the pond once the water has been treated and is at the right temperature. Maintain the pond by regularly cleaning the filter, monitoring water quality, and feeding the fish appropriately.
When the crayfish ages, it has a chance of chopping your goldfish to pieces, and possibly eat it.
pond
yes
The goldfish will eat the mosquito's larvae before they can leave the pond and fly.