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Discussion Starter #1
Hi all, new to the forum but not to fish keeping all be it 25 years ago. Things have changed since I last kept tropical and marine tanks such as the cannister filters and available products.
I've just invested in a Aqua one 145 liter tank which is up and running but not started a cycle because I'm having an issue with the local water.
When I kept fish here before 25 years ago the GH, KH and PH buffered around 7.3 in the tank after 2 to 3 days settling down with air stones running, heat on, filter running and dechlorinated.
I set my tank up 4 days ago and the initial PH was 7.4 out of the tap. Air stones running, heater on, Aqua one 850 running, used Prime dechlorinator and after 24 hours the PH settled at 8.0 and stayed there stable for 3 days. I test with a test tube kit and a ATC pen which both give the same reading.
Out of interest I then tested all my silicate substrates to make sure they were inert over a 24 hour period without air and they did not effect the water like the tank does but went to 7.8, I then tested the tap water on its own without air over a 24 hour period and again 7.8 so we're getting high buffering. Today I removed 3/4's of the tank water and replaced it, added Prime. heated it and filter running but no air. After 6 hours PH was at 7.8 like the water I tested. Turn the air on, CO2 and Oxygen exchange quite rapidly and here we are at PH 8 buffered up to the eyeballs lol.
If I get stability on this second run I'm thinking of keeping the 8 PH because I'm not in the habit of using peat or driftwood or artificial buffers, I tend to stick with what ever I have at the tap because it simplifies my PWC's.
My question to you guys is this:- If I stick with a stabilized 8 (which might drop a tad after the stock replaces some CO2) is most of the stock in the UK tolerant of moderate hardness and a PH of 8? Are they supplying fish bred over here in the UK that will adapt to PH8?
Or are they still importing fish from abroad less tolerant.
The fish I'm planning are thus after completed no fish cycle:-
No more than 20 small to moderate community fish working at the figure 1cm per litre (I have 125 litres after substrate and ornaments)
Guppies
Danios
Neon Tetra
Cherry barbs
Corydoras (dwarf type)
and maybe a solitary show fish in the middle such as 1 angle.
If UK stocks won't take 8PH for these species I'm open to ideas of a better plan with community fish that will take the higher PH levels.
BTW I did a ammonia test this morning (test tube) and was expecting some released ammonia after the Prime had suspended the ammonia from the chloramine then released it after 48 hrs. Wasn't too bad at 0.2ppm and I'm happy to start a cycle at those levels.
Thanks in advance.
Maff
 

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Discussion Starter #2
Checked my PH in the tank this morning and PH is 8 and stable.
 
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