That's why it's important to have an aeration device, a bubbler, in your home aquarium. Warm water holds less dissolved oxygen than cold water, so summer is the time when fish can have a hard time getting enough oxygen.
Other organisms use oxygen, too, including the algae that grow in the summer and bacteria that degrade organic matter. During the day, the algae produce oxygen through photosynthesis, but at night, when photosynthesis stops, they and other organisms keep respiring, using up oxygen. So on warm summer nights during algal blooms , the dissolved-oxygen concentration sometimes drops too low for the fish, and a die-off can occur.
This can occur as a result of purely natural conditions or because of human activity that results in adding nutrients, nitrogen and phosphorus , to water systems. Nutrients come from many sources: fertilizers, automobiles, sewage, manure, and others. An excess of nutrients tends to speed up the growth of algae and diminish the availability of dissolved oxygen.
Low dissolved oxygen can result from other factors, too, such as poor flushing or circulation, dredging, or a sudden rain after a dry spell. Using a piece of rigid airline connected to airline tubing creates a great suction device for getting into small cracks and crevices.
You can vacuum your corals without damaging them this way. Your email address will not be published. Yes, add me to your mailing list. Should I be worried about algae effects on fish? Cellular Algae. Subscribe to get more tips and info about fish. Leave a Comment Cancel Reply Your email address will not be published. We'll never share your email.
How often do you clean the filter? Is there driftwood in the tank? Plecos like to eat the driftwood. Chinese algae eaters should always be avoided!! Is your temp good for those fish my tanks are warmer. Pleco and other algae eater stay mostly at the bottom of the tank.
The the water quality will be less there. Well the existing fish have adapted to the water quality. There coming from cleaner water. The bottom of the tank will hold more waste so water quality is even worse.
If they were acclimated wrong they would have died sooner. Without testing we can't know what is going on with the water in this tank. I have to wonder if maybe your water is too hard or too soft or maybe the nitrates are off the charts high. I totally agree with 86 ssinit about the amount of water being changed and the frequency it is being done. Over time things that even we that do test our water don't test for.
Those things build up over time and eventually they reach the point of being unhealthy for our fish. Our original fish have gotten used to the build up because it happened very slowly. When we add new fish they haven't had time to acclimate to the conditions the original fish are used to so soon die. You don't want to shock your original fish by changing the parameters too quickly but in my humble opinion you will have better luck with plecos if you improve the water quality.
Gradually increase the amount of water you change each time. Be sure you pay attention to to the gravel and use your gravel vac to remove any build up of waste that has accumulated in it. Plecos spend a lot of time on the very bottom of the tank so removing a build up of waste should give it a cleaner place to graze.
Once you have done this I have to think it will be safe to try a pleco again. Fresh clean water is the very best thing we can give our water pets to keep them safe and healthy. Thanks for the replies everyone! I'm going to clean out my filter, start doing larger water changes, and get my water tested.
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