Managing Ph and Kh

jonasionin

Jonas
Nov 10, 2006
40
0
0
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Oakland, CA
Hi All,
I am a new hobbyist with 5g and 10g tanks running with no C02. Recently, I decided to go for it and am currently cycling (w/o fish) a 50g tru vu w/C02.

The lfs recommended that I raise the Kh to 5 degrees? (100 ppm???) to balance my Ph at a neutral level with Seachem's Alakaline Buffer. I have read and heard several different and conflicting opinions on this matter.

The first is to raise my Kh to 5 with Alkaline Buffer and keep Ph around 6.8 to 7; another was not to worry about the Kh and as long as the Ph doesn't drop below 6 the plants and future fish will be fine; another was to "harden" the water with baking soda; another says that Ph and Kh will be different during the cycling period and that it will likely change once the nitrite levels drop to zero; there was yet another that I can't seem to remember.

Anyway, as a newbie, this is all very confusing and the only conclusion I can come to is that no one way is the right way, and that I will need to pursue the path that is most comfortable to me. I am of the opinion that less is more, so I am hesitant to go down the path of managing my Kh level with the Alkaline Buffer or baking soda, just because it is just one more thing that I will need to manage to keep a successful aquarium. But if it means my fish and plants will be happier, I don't mind increasing the Kh and Ph with the Alkalinity buffer or baking soda.

Any opinions, suggestions or more importantly success stories and methods would be appreciated on this topic.

My current levels after less than a week of fishless cycling are:
Ph 6.0-6.2
Kh 20-30 ppm
C02 (based on Ph and Kh levels) anywhere from 20-50 ppm
ammonia and nitrites peaking (as expected)

T5 lighting with two 39W tubes
ADA ammazonia on one side and Seachem fluorite on the other with Monterey sand under ammazonia to increase depth and ht of mountain scape.

The 50 g tank is stocked with many plants (including snails that came with them) and will include several ottos, a red tail black shark, and cherry shrimp (currently housed in the 10g), and a yet to be determined school of small fish(probably rummy nosed tetra). C02 is being diffused through a ceramic spray diffuser with bubble counter at a rate of approx. .75 bubbles per second.

So for now I am waiting until the cycle has completed to do anything. Sorry for the long intro to my questions, any input would be appreciated.

Jonas
 
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Just making sure, but you do realize the red tailed black shark is extremely aggressive by nature, and may pester or kill your other fish? They can also get up to 5" in size...
 
I'm not sure the red tail black shark is "extremely" aggressive, but yes, I am aware they can and will be somewhat aggressive and that they get pretty big, which was one of the reasons for the 50g tank. He chases one of my ottos, but the other otto simply ignores him and I have not had any problems yet. As I stated, I am new to the hobby, and its only been several weeks with the fish, but so far so good...
 
i dont like adding chemicals.... well except prime.


i think the best buffers are either crushed coral or dolomite.
they are natural cheap and last forever.
 
Thanks I'll look into that...is there any "good" ratio you are aware of??? X grams of coral/dolomite to gallons of water?
 
I admittedly failed with plants, and this may be the reason why. However, I have always followed the idea of plants and animals will do better with a semi constant ph then they will with one that continually flunctuates due to the use of chemicals to try and modify it.

I never messed with mine, because my pH even with CO2 never got below 7.2.
 
I would prefer not to manage the levels with chemicals/additives, but when I add C02 my Ph drops to 6.2 and my Kh is at a measily 20 ppm. If I get responses that these levels will work for fish and plants, I could care less, however, if higher levels (the more conventional 7 for ph and 5 for kh are best) then I'm willing to try to maintain them...
 
you do have a need to buffer, my tank water is even softer than yours and it was a real mess until i started buffering. especially if you want to add co2

i dont think there is a real ratio. becasue its a slow process (which is good)

i have a nylon bag in my filter that contains about a cup of dolomite(maybe a little less). i added it a tablespoon at a time each water change (so each week) and watched my ph and harness like a hawk. until it got where i was happy...
 
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