Hello Venus, I'm goldfish sitting again. This time, just for 12 days. Since the pump and pond sponge was added last time, it appears that good bacteria were able to grow in the tank! This is a 5.5 gallon tank with 3 small fantails. Unfortunately, I will not be able to upgrade the tank size as it is not my tank :( Current readings are: Ammonia=0, Nitrite=0.5, Nitrate=5, pH=7, KH=0. (No GH reading until new tester arrives). One of the fantails’ tail frayed before and apparently the tank was salted. When the tail healed, it became black. Current salinity is 0.03ppm. One side of the black tail is longer than the other. I’m not sure if it’s completely healed but I imagine this happened as a result of cycling. The top fin of that fish is also slightly torn. Should we add any treatment to assist in the fin/tail healing? Or is fixing water parameters enough? Do you think we are in the middle or tail end of cycling this tank? With the current nitrite and nitrate levels, how often should I be doing water changes and how much water should I be changing? Should I dose Prime for the amount of new water added or the entire 5 gallon tank? Since the KH=0 (very low mineral quality), should I add some backing soda? Our tap water also has close to no minerals and low pH. I have already ordered some small wonder shells to arrive next week. In the meantime, should I add baking soda to raise KH and then add the shells to maintain KH? Or just wait for the shells and rely completely on the shells to raise and maintain KH/GH? If I add baking soda first, how much should I add for 5 gallons?
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I visited my dad's friend's 2 outdoor ponds today and here are the parameters: 2700gallon pond, 5.2ft 33 large koi, pond 2 years old: KH 65 GH 20 - 40 Ammonia 0.1 Nitrite 0.1 - 0.3 Nitrate 50+ (under 100) One fish in the large pond has bulging red eyes, another has a big bulge on the side of its body. 770gallon pond, 3.5ft 20 large koi, pond 6 years old: KH 30 GH 20-40 Ammonia 0.1 Nitrite 0.1-0.3 Nitrate 50 He appears to have a problem with high nitrates and low KH and low GH. He had to keep doing water changes to keep nitrates low or they can exceed 100ppm. The ponds are quite full with koi and they swim slowly. Each pond has a small waterfall that brings water down from above and a filtration fixture at the bottom on the pond that sucks debris out to an external canister. The larger pond has a fixture at the bottom of the deep end that can push water upwards with surface action like a pond pump. There are constant low levels of salt (0.12) in the ponds to prevent infection. I've forwarded this site to Dad's friend and linked this blog post to him. Hoping he can followup with you here on how to treat.
Goldfish Vase My brother and his girlfriend have left me their vase (!!!) of three small goldfish for 5 days. The vase has some plants inside and some pebbles at the floor but no pump or filter. They usually do a 50% water change every few days and feed once to twice daily. The fish have been I would like to get them a proper tank and water pump, but I am concerned that suddenly changing the environment will shock the fish. I don't think that they will take home a tank greater than 10 gallons. What do you think of this pump? I don't see a water intake area for a sponge though... Fish now in five gallon aquarium
Sick Koi but good water parameters in outdoor Koi Pond?? Hello, I'm currently babysitting my parents' outdoor koi pond and will be doing so for about 2 weeks. It's quite a large pond (10,000 gallons and spans half of our backyard). We have several large koi (length of adult forearm) and several smaller goldfish (length of adult palm) and based on the number of fish, the pond may be overstocked. The outdoor temperature in Vancouver has been quite variable this summer (16 - 32 degrees Celcius. Low-mid 20's this week but the temperature was up to 30 degrees over the last 2 weeks). For some reason the pond is losing about 4 inches of water each day so we refill the pond with a bit of fresh water each day (like a 5% daily partial water change!). My parents have had this pond for about 5 years. At first glace, the fish look relatively healthy (full scales/fins) but there are always a few fish in the pond that have finrot, sores on the body or strange growths. Some fish have had raised scales, pineconing and died not having released their eggs. The fish have been exposed to salt and antibiotics many times. Sometimes the treatment works, but on average about 1 fish dies each month and my parents replace them. At the moment, one very large fish currently has sores on one side, some raised scales and prefers to swim at the bottom of the pond and doesn't seem interested in food. Another strange observation: when I fed the fish this morning, I noticed that 3 smaller fish appeared to be chewing/biting another small fish of similar size in a corner of the pond. When I threw food at them, all of them swam away. What does this mean?? Seeing that there are always ill fish, I assumed that there must be problems with the water quality. However, when I tested the water parameters of a sample of pond water today, they seemed ok: Ammonia: 0-0.1 Nitrite: 0-0.1 Nitrate: 5-10 pH: 7.2-7.4 KH: 10 GH: 20 Phosphate: 1 I came across your site and thought that the garlic may help. My parents usually feed Hikari pellets twice a day, so over the last 2 days I have been feeding a mix of presoaked pellets and cooked peas but I think only the smaller fish were able to see the crumbled peas because the large koi swam right through the small bits. I have attached some images of the pond. Please let me know if you have any ideas Thanks!! -M