Matt F.;120576 said:
Co2 is often the cause of shrimp death and a lack of population growth. I've had a reproducing RCS population and Amanos in a tank that got a full-out EI regime. I think Tom did a trail where he purposely OD CSM+B on a higher grade CRS tank. The shrimp were fine, but we don't get close to the LD50. Purists will say no ferts and CO2 in a delicate shrimp tank--think the type of tank that has sponge filters only. Do you want to breed? If so, I'd keep the water as stable as possible. This does not include ferts, C02, and glut.
In order to say that CSM+B is the cause of shrimp death or a lack of reproduction, you must first control for all other variables. Then you'd have to reproduce those conditions and test again.
Well, if you go this route, then you would also question the inbred genetics that most of the colorful so called delicate species have, same for the newer fish strains.
This assumes that non CO2 is the best, I agree with that. Sponge filters make for good fry food and shrimp like to pick sponge.
They also do not kill shrimp or get stuck in the impellers etc.
Stable, this means stable TDS mostly.
So.....now you are left with a non CO2 low light tank, why do you need EI?
You don't. So.........this sort kills the argument.
Ferts are added to non CO2, but at only maybe 1/10th that of EI, maybe to about 1/20th.
I like to use CO2 and more ferts, light etc, AND keep shrimp. The trade off is I get less brood production, but.........I also know why I get less brood, the filter gets some, the CO2 produces LESS. I've already done this.
Ferts? This is really and truly wishful thinking.
I did not vary a specific fert, say like copper, or just PO4, or just NO3. I added all of them and never noted any effect/s.
CO2, yes.
Excel/Glut, yes.
But ferts, no.
The onus is upon those making those hypotheses to actually offer some support, measure some real numbers, I want something like an LD50 of copper at .45 ppm for species X.
Show me your methods and results. I have NEVER once seen this.
Not from them, nor from algae speculators, or plant stunting theorist, or fish hucksters.
Bastards want me to do all the cotton picking work and proof while they just speculate.
I just make observations that falsify their claims, thus I get closing to the real issue of cause(or at least narrow the choices down a lot more).
I'm not looking for causes directly, I am just not that lucky.
I make mistakes and assumptions, but, I learn a lot from those mistakes/assumptions. Often that there's little to no risk associated with ferts.
The same bunch that make these claims about shrimp, use to say this about the CRS, well, after the lower grades were ruled out, they back up and said, well, it's just the higher grades.
Then after that wall too fell, they backed p to SSS+ grades. Same deal. I'm not going to keep playing that game with the shrimp zealots. It's time to put up or shut up.
I know based on other shrimp keepers, that genetics played a huge role. Many rushed them to market from highly inbred lines, which weakened their environmental tolerances.
That's not delicate shrimp, that bad breeding.
If you breed the trait with 3-5 independent lines, then you have a robust genetic strain.
These same inbreeding issues are looked at for the dog and cat shows. There are telltale signs.
Discus, same thing.
It takes a lot more work to make 3-5 independent lines rather than just 1.
So I do not want to acknowledge the genetic issue nor do the proper breeding(or buy properly bred shrimp) and I do not want to do my own testing and I want to make stuff up that I believe without any support other than dogma.
Ahh... okay.