Green soupy water

Have you tested the NH4, NO2/NO3???

They could be off the charts. If you NH4 or NO2 is high without any NO3, then it definitely is a biological issue. If there is not NH4, but high NO3, then water changes will solve the problem.

Definitely add any plant life you can. Hornwort, Java Moss and Java fern will all help without CO2. If you can try some water sprite and you have the minimum of 1.0 wpg, you will see the nitrates dissappear with the addition of those and regular (40-50%) water changes weekly over the next 3-4 weeks.

Thanks,
Steve
 
If there is an overabundance of something that is not remedied, then yes, the rotifiers will be overwhelmed by the GW. My assumption is that this is a tank that never had a high population of rotifiers, since it is likely that fry consumed them previously, so a re-introduction will recolonize the tank, and allow them to become established in levels high enough for the fry predation to have minimal impacts.
 
The problem is that when I started I had marbles at the bottom and all the waste was there and I didn't even know! When I moved some to the 23, I saw how much crud there was and algae had already started to grow. I did a massive cleaning and put in another filter to help out
Click to expand...

A typical algae bloom due the the sudden release of nutrients collected over time within marbles.
Remove the marbles if they are still there.
50% water change + gravel(?) vacuum.
toss in a plant or two to establish microfauna, any old aquatic plant will do, it doesn't have to be permenant.
be patient.

good luck
:)
 
I am not sure we have the same problem. a year ago, i went on holiday for 2 weeks, i using those 2 weeks vacation food to feeding my fish, when came back, the water are all green, no matter how much water change i make, it don't help, 25%,50%,75% doesn't matter in my case, finally call the local fish store, and purchase a stuff call fincare 1 (i believe), put it in, all green stuff was gone in 48 hrs.
 
overpopulation

How many fry? How big, you said nearly adults. I suspect they have outgrown the tank.
 
Oh yea, the fry definitely need a new home. But I'm getting another ten gallon this week finally! Hurray! So I have already removed more than 50% of the marbles. There were about 4 litres of marbles in the begining, now there is less than one. When I get the 10 gallon, I will also get the java fern (which I keep forgetting! GRR!) I don't have any kits to test for NH4, NO2 or NO3, sorry. I'm trying to not spend any more money on my fish except on buying them, meds or food.
I've been leaving the lights off during the day and turning them on after 4 each day to reduce the growth of more algae. I've done pretty big water changes but those seem to help only temporarily. I think I will just move all the fish into the new 10 gallon and give the old one a good scrub and then move half of them back into the 10. Seems the most logical to me....
 
So I finally got a java fern, I was wondering how much light do they need to do well, because I want to give my tank less light than usual to help combat algae.
 
You don't use Proper pH or some other phosphate based softener/pH lowerer, do you? Anything that adds phosphates to you water will feed the unicellular algae like crazy...

Just a thought...

If all else fails, there's always a UV unit.

Jim
 
Nope, no pH modifiers in the tank. I'm so stingy right now, I really don't want to shell out any extra cash. Do you have an idea of how much they cost?
 
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