How to keep the water clean by keeping goldfish

The predecessors of goldfish breeding have long had the experience of "raising fish first and then raising water", which shows that the quality of water quality will directly affect the normal growth and development of goldfish. The purpose of changing water is to remove dirt (garbage, fish manure, surplus feed and stale impurities), keep the water clean, adjust the water temperature and increase oxygen in the water, thus stimulating the growth and development of goldfish.

If you want to raise goldfish well, you must have a preliminary understanding of fish culture water:

1. Unpurified water

Refers to tap water or well water that has just been discharged and has not been dried. Its water temperature is often quite different from that of fish ponds (tanks), and contains more chlorine, which is very harmful to goldfish.

2. Fresh water

It is tap water, well water or spring water. After drying and standing for about 2-3 days, the water temperature is equal to or similar to that of fish pond (tank) water.

3. Chen shui

It is the dirty water with feces and dirt at the bottom of the fish pond (tank). Including the water supply that has not been replaced for a long time in the pool (cylinder).

4. Old water

It is the general name of clean water in fish ponds (tanks) that is tender green, green, old green or brown green. Among them, light green water is the best. There are many green algae floating in the old water, which is also a good auxiliary feed for goldfish. This water decomposes less organic matter and more dissolved oxygen. It is often used to raise fish in tender green and clean old water. The fish bred have the largest appetite, strong body, bright color and rapid development.

Step 5 return to clear water

If it is found that the old green water in the original pool (tank) suddenly turns into clear water, and a lot of green algae are precipitated at the bottom of the pool, this phenomenon is called returning to clear water. This kind of water is easy to cause fish diseases and needs to be completely replaced.

(1) Under normal water exchange conditions, especially in hot summer, it is only necessary to gently suck out the feces and dirt at the bottom of the fish pond (tank) together with the old water every day with a hose to remove the dust and floating feces on the water surface, and then slowly inject isothermal new water along the wall of the pond (tank) to keep it. This method of changing water is not easy to hurt fish, simple and safe, and is most suitable for family fish tanks or small ponds.

(2) Partial water exchange is mainly carried out in two situations. In one case, in the hot summer and early autumn, the feed water in the fish pond (tank) has been changed for several days, but the water turns green quickly (due to a small amount of feed), and the water quality is still clean. Therefore, in order to prevent goldfish from scalding their tails, all the goldfish in the pond (tank) can be fished out, and then the water in the pond (tank) can be rotated into a spiral shape, and the pond (tank) can be put to rest for a while.

Another situation is that the water in the pool (tank) has only been changed for a few days, and the color of the water is still good. However, due to excessive feeding and floating head, emergency measures must be taken. The method of changing water is the same as that mentioned above.

If it is a big fish pond in a fishing ground, it is not necessary to fish out the goldfish, but to enclose the fish with a folding screen, and then gently rotate the water in the pond with a fishing net for several tens of seconds. When the water is still for a while, start the drain gate to drain slowly, or suck the surplus fish, feces and old water in the center of the pond (trough) with a straw, or fish out the surplus fish and insects in the center with a fishing net bag, and then release 1/4-.

(3) Completely changing water This water changing method is often a combination of turning over the pond (tank) and selecting young or adult fish. It is often used because the water quality is seriously deteriorated or the moss is too long and the fish is too dense. There are two specific methods:

1. When there is no free pool, we have to fish all the goldfish into the basin or put the cage in the water of the adjacent pool for temporary cultivation, and add an oxygen increasing head in the basin or cage to increase oxygen. Then, brush off the moss on the wall of the original pond, rinse it thoroughly, re-inject isothermal fresh water, let it stand for a while until the water temperature is equal, and then put the fish into the original pond (cylinder).

2. If there are free ponds and fresh water, all goldfish should be caught in pots or cages, and selected and treated separately. Goldfish can be moved into fresh water and fed in sub-ponds, regardless of water temperature. This method of changing water should pay special attention to the water temperature, and it is best to choose it before 9 am on a sunny day. However, this method is generally only applicable to adult fish or larger young fish, and young fish should not be used. If possible, it is best to fill the standby pool (tank) with flooded water before completely changing the water, and then fish it directly into the standby pool (tank). In this way, the water temperature changes little, the fish can easily adapt to the new environment, and the fish can be prevented from being squeezed in pots or cages. In spring and autumn, this method of changing water is generally carried out every half month or so 1 time. In summer, when the weather is heavy and the water temperature is above 28℃, the water should be completely changed every 4-7 days 1 time. In winter, when the water temperature drops to about 4℃, goldfish move slowly, their appetite drops, and the water quality is not easy to deteriorate. Generally, all water is not changed unless there are special circumstances.