I do not think daphnia are an answer to blue green algae. This is not green water. I've put daphnia into a tank with this problem without any change to the green slime. I've got this problem in one tank lightly stocked with fish. I've noted the comments above about the nitrogen/phosphate ratio and my nitrate levels are very low, phosphate a bit high and plant growth poor compared with my other tanks. Increased water changes, more plants and heavier stocking to raise nitrate levels seem indicated. I'm going to remove the fish, move in an axolotl and add watercress which is cheap and available at the local supermarket and for me even cheaper because it is growing vigorously in my main axolotl tank. It will be nice to get rid of this green carpet with a clinging smell which makes me need a shower every time I reach into the tank.
Hi,
I have been a avid tropical fish keeper for 25 years.
I only got my axies in august as a gift from son and daughter.
But i have been a tropical fish breeder for last 25 years.
As stated you need to cut down light,axies need to be kept in semi darkness,eg/to keep cool as uper limit for temp is 16/18 dec.
Over abundance of light will turn water green/so where are your axies kept.
In the wild as they are only have 4 hours min of sunlight a day,hey and that was when thay where in the wild,you cant see them any more,.
The main reason is to many axies for to few plants,
Awell grown aquarium rarely needs any siphoning ,i use snails,a very good filter,with bio medium,eg filtter rate keeps cemicils to the zero.
/ok for all avid people i know you hate this/
well i hope this kind of helps.
Axolotl Enthusiast