Ideas For Hardwater Tank

[dazzadub]

Have a fluval Roma 125


So far, I have 3 Molly's, 6 Harliquens, 6 cardinels.

Yes some of the above arnt idea, but where breed locally in local water and told they should be great.


My water
Ammonia between 0 and 0.25 based on 2 tests done over 2 week period

Nitrite 0

Nitrate 10

DGH 18

Ph 7 and 7.8 maybe tests done which makes different so I've gone in basis of the top ph reading, cant go wrong then.


Ideally I'd like maybe a plec or catfish for the bottom and a pair of colourful fish for the middle if the tank.


My other fish are mainly top and middle, and Molly's go bottom aswell.



So what ideas are there.



I was thinking a clown pleco but told they create more waste then they do cleaning.


Pair I wad thinking dwarf Gourami but also put off because of there illness DGD

 

[TwoTankAmin]

As far as I know most tetras will only spawn in acid water.
or

 
Hardwater-tolerant tetras 
 
As a rule, the popular South American tetras tend to tolerate rather than thrive in hard water. Some, like Neons, cardinals, and Glowlights, suffer somewhat, and their mortality in hard, alkaline water can be very high. Nonetheless, a few tetras do inhabit hard water streams and rivers, and these make excellent choices for the aquarist with a hard water aquarium. One of the best is the x-ray tetra, Pristella maxillaris, a pretty, peaceful tetra that adds colour and movement to any community of small fishes. It isn't a fin-nipper, and so can be trusted with things like guppies, and is big enough that it isn't at risk of being eaten by things like halfbeaks or dwarf cichlids. Another fine choice for the community tank is the blind cave tetra, Astyanax mexicanus. Because this fish inhabits streams in limestone caves, it is perfectly adapted to hard, alkaline water. It is, of course, a wonderful oddball fish, and despite having no eyes it has an uncanny way of navigating and finding food very effectively; a splendid fish for the aquarist after something different.

from http/www.wetwebmedia.com/fwsubwebindex/fwhardness.htm
 
or
 

 
Adjust the water in the breeding tank to a pH from 5 to 6 and a DH from 1 to 2. Add the appropriate amount of Blackwater extract and presto you have it, Amazon river water !

from http/www.wetwebmedia.com/fwsubwebindex/fwhardness.htm
 
or
 

 
In the aquarium, they thrive best and can live more than 10 years when kept in soft, acidic water, and while they will somewhat adapt to other water conditions provided they are acclimated properly, their life span will be shorter. When maintained in harder water they can develop calcium blockage of the kidney tubes. It is also believed they have a light phobia, and the aquarium should not be brightly lit. The majority of the cardinal tetras available in the trade are wild-caught and attention must be given to their habitat preferences. Wild-caught fish generally are more demanding of their preferred conditions, and this can be even more important when the fish itself is very sensitive with respect to water parameters and environmental conditions.

from http/www.tropicalfishkeeping.com/characid-species/cardinal-tetra-red-neon-tetra-paracheirodon-191441/
 
I can find countless support for the above. I can not find any statements on how to spawn them in hard water such as you describe or that it has been done.

 

[dazzadub]

I didn't say they spawned or even suggested they would.

I'm saying the cardinels and Harliquens were bred by my local store in hard water, I don't know how or where. And are in my tank with out any issue