I have seen an increased number of what seems to be Planaria in my tank. I do not see that many during the day (whilst lights are on) but at night when i turn on the light to check things, i see millions on the glass. There seems to be a lot more on the opposite end to where my C02 is being diffused (maybe coincidence)
After reading a little about them, the main cause seems to be over feeding. I have maybe 50 red cherry shrimp in the tank (75 gallon moderatly planted) and i actuallt rarely feed the shrimp (maybe once a week with 2 algae wafers or a sprinkle of shrimp pellets) the food is usually gone within an hour or 2 so i know my shrimp are eating and i dont see any leftovers)
I also do a 40% WC once a week and have done since the tank was setup (maybe 3-4 months ago) What could be causing this sudden bloom ?
More tank details:
flourite/pool filter substrate
pressurized C02 runs 24/7
2x Rena XP-3 filters
Heater at 73 degrees
4x 54w T5 HO
I have , had them in my newly set up quarantine tank. I noticed a small amount only where the light hits the glass near the corner. I do not illuminate the entire tank. I squashed them with my finger & I have not noticed any since which was about 2 weeks ago. I do see string like projections in that same area , not sure if its algae or newly forming ones on the glass? I use sponge & internal canisters on that tank. I read they are in the water supplies & if nutrient levels get higher enough they will form. Certain meds , do your HW can kill them as well as lowering nitrates. Come to think of it when I first saw them I had high nitrates, since it was newly cycled with ammonia. They were higher than 40 ppms when I noted them. Now I am below 30ppms last time I checked & I do not see any at the moment. My other planted tank I have a case of white worms which are dinitrius in nature . Sorry about the spelling. I know they are living in my substrate even though my tank looks great. They could be causing a nitrate spike which I am currently trying to figure out. I read flubinzole will kill them & is ok for most shrimps. That was my best shot at your problem.
Another thing you could try also is pack some carbon in the canisters to pull out more doc's out of the water. I did that for a month in the planted tank & the water became ultra clear & the plants did not mind.
I am guessing you run 24/7 with the CO2 because you have a controller? If not, I would not run at night because you are wasting gas & stressing fish. It could also contribute to the planaria problem , because there will be less 02 anyway during this period & higher CO2 is not going to help in my opinion. If anything, higher O2 would help rid Planaria even if it is not a direct cause. A tank with higher O2 levels is healthier within reason as long as it is not saturated. Increasing surface agitation could also be worth a try. Just a thought.
I have tried carbon and also changing 10 gallons of water everyday. I have yet to feed my shrimp that are in the tank, as i know there is enough algae and plant matter to keep them full. How can the worms still be surviving with no food ?
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