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Jacob’s thread taken up again

  • Peter Finke
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9 years 4 months ago #218 by Peter Finke
Replied by Peter Finke on topic Re: Jacob’s thread taken up again
Jacob, you are fully right: black­wa­ter tanks are not as easy to main­tain than nor­mal clear­wa­ter tanks. But: They are not as dif­fi­cult to main­tain as some of your fears seem to indi­cate. And addi­tion­ally, there is a very inter­est­ing expe­ri­ence that we in Europe have made: humine acids and humine sub­stances are impor­tant for that fish, but not nec­es­sar­ily a very low pH and even not nec­es­sar­ily true black­wa­ter. Many Parosphromenus-​species have in Ger­many been grown and bred in clear­wa­ter if the load of germs only was rather low. It’s the den­sity of germs that is lim­it­ing the sur­vival of eggs, lar­vae and very young black­wa­ter fish, not the black­wa­ter or the very low pH itself. But that helps to min­i­mize the germ load.
Yes, try that S. vail­lanti under these con­di­tions. We have breed­ers with good suc­cess with these fish under sim­i­lar cir­cum­stances. But look for P. har­veyi or tweed­iei, linkei or bril­liant quin­decim or the new won­der­fully red spec. Langgam: If they are pre­sented ade­quately, they most cer­tainly will gain new friends for those spe­cial, more bio­log­i­cally set-​up aquaria, too.

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9 years 4 months ago #227 by Jacob
Replied by Jacob on topic Re: Jacob’s thread taken up again
The tank has hydra in it. There are some strange small ani­mals liv­ing in the tank, pro­vid­ing them food. It must be inevitable if there is live food in the tank at all times that there will also be hydra. Should I clean the tank and hope the hydra are reduced over time by that or put in some­thing to treat the prob­lem?
I read that blue gouramis might eat hydra, maybe sphaerichthys will but I bet even the blues would have to be really hun­gry to go for them.

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9 years 4 months ago #228 by helene
Replied by helene on topic Re: Jacob’s thread taken up again
I think that hydra is not a prob­lem unless its really really a lot, — and maybe it could depend on what type of hydra. Nor­mally hydra will come because the tank is fed with lots of live small food, such as artemia. But they dont cause any prob­lems for big­ger fish in my opin­ion.
But I would not count on any gouramies to take them, nor in a reli­able way :) .. if theres other food, they will skip the hydra I am sure.
Back to the Sphaerichthys and num­bers, — I think again, pairs are not a good idea. Again I havent got any per­sonal expe­ri­ence, — but my friend found that keep­ing them in a smaller school really is very ben­e­fi­cial and even if you dont think breed­ing is pos­si­ble with more num­bers on the con­trary it is then that they breed. I think they are mouth­breed­ers as well as the other choco­late gouramies which means you can then seper­ate the breed­ing par­ent when it comes close to releas­ing the fry.
But breed­ing choco­lates or spaerichthys is kind of dif­fi­cult :)

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9 years 4 months ago 9 years 4 months ago #231 by Peter Finke
Replied by Peter Finke on topic Re: Jacob’s thread taken up again
There is an absolutely effec­tive rem­edy against Hydra and Pla­naria. The entry in Wipike­dia says: “Fluben­da­zole is an anthelmintic. Its brand name is Flutelmium which is a paste man­u­fac­tured by Janssen Phar­ma­ceu­tica N.V. used by vet­eri­nar­i­ans for pro­tec­tion against inter­nal par­a­sites and worms in dogs and cats. Other brand names are Flubenol, Biover­min, and Flu­moxal.“

Many of us in Europe have used it (here it is called “Flubenol”) as a white pow­der with def­i­nitely sure suc­cess against Hydra even when applied in very small doses. In a tank of about 25 liters you only have to put a very small amount (“a knife’s point”) on the water sur­face, it will spread there and one day later you will see the Hydra con­tract them­selves and dis­ap­pear. I never had fish loss or fish indis­po­si­tion after its use.
But some aquar­ists dis­suade from using it in pres­ence of shrimps, oth­ers do not assent. I should be care­ful with that.
You should pro­vide for a small amount. Try to get the powder-​form, it’s eas­ier to apply.
I do not know whether there is an aquarium-​brand of this prod­uct in the U.S. Here in Europe there is none.
Last edit: 9 years 4 months ago by Peter Finke.

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9 years 3 months ago 9 years 3 months ago #256 by Peter Finke
Replied by Peter Finke on topic Test of germ den­sity
In that inter­est­ing dis­cus­sion with our amer­i­can friend Jacob on black­wa­ter aquar­is­tics I men­tioned the impor­tance of low germ den­sity and named a prod­uct of the Merck-​Company for mea­sur­ing that in the aquar­ium (post 145). Later (post 183) Jacob told us that this prod­uct will be no longer avail­able, at least in the U.S.
Here is a link to another Com­pany that sells a test­ing Kit equally con­ve­ni­ant, but it is to be proven in which coun­try it is avail­able.

www.windaus.de/1828700226/126/PD67/41990…/1/Windaus+Bild.html




This post has been moved from another kat­e­gori, as it was meant to be here. For this rea­son it may seem ‘out of order’ because it has been moved at a later time than the dis­cus­sion took place /​Helene Schoubye, webmaster
Last edit: 9 years 3 months ago by parosphr.

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9 years 3 months ago #258 by Jacob
Replied by Jacob on topic Re: Jacob’s thread taken up again
Does uv fil­tra­tion remove humic sub­stances or just bac­te­ria?
I thought that the good bac­te­ria lived in the sponge and on sur­faces in the tank, but a uv fil­ter can neg­a­tively affect an aquar­ium by killing organ­isms float­ing in the water?

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