什麼是ppm、加鹽0.3%?(What is ppm and 0.3% salt?)

相關資訊:金魚養魚經部落格地圖

       ppm(parts per million)就是百萬分率,即１０００公升的水含１公克（１g=１０００mg）的物質，即１ppm等於１公升的水含1mg的物質，１０公升的水加２００mg~３００mg黃藥，配出來就是２０ppm~３０ppm。

       １%濃度就是１００公升的水加１０００公克（g）的物質，即１公升加１０公克（g）的物質，加鹽０.３%就是１００公升的水加３００公克（g）的鹽。

ppm is called 1000 liter water included 1 gm of material. So, 1ppm is called 1 liter water contained with 1 gm of material. If the yellow medicine 200 ~ 300 gm included in the 10 liter water, it is called 20 ppm ~ 30 ppm.  The consistency 1% is meant adding 1000 gm material into 100 liter water, also meant adding 10 gm material into 1 liter water. Adding 0.3% salt means, adding 300 gm salt into 100 liter water.

金魚保健不求人-換水：
每次換1/4-1/2缸水(新水先除氯)，夏季每週一次/冬季半個月一次

視魚病狀況換2/3缸水+0.3%~0.5%粗(食)鹽

換水不洗濾材，洗濾材用缸(舊)水

白棉至少兩層，過髒換上層，新綿放下層