Hi,
I've been to Ocean Commotion but didnt mention it becuase I couldnt remember the name !!
I got my Otocinclus from them.
I've not been to Wharf Aquatics ... but will put it on the list of things to do.
As for your water readings. I'm no expert here, but understand enough of the basics to satisfy
my needs (and those of my fish!).
Other than adding CO2 I dont play around with any of my readings, some people specifically raise or lower their PH value depending on their requirements, but the advice usually offered by those with more knowledge than I, is leave things alone unless you really NEED to change them.
This link will give you a much better description of each, without assuming you are some sort of scientist! -
Aquarium Water Chemistry !
Water in my area is very hard, this isnt a bad thing when adding CO2 as a high KH reading gives a good buffering capacity to avoid huge swings in your PH.
My tap water PH is high, so there is room for a drop, acutally my PH is high enough that the PH drop was beneficial to the fish.
Adding CO2 WILL lower your PH !
If you check your PH and your KH you can find out your CO2 level using one of the online calculators/charts
(sorry dont have a link at the moment - currently at work!)
I checked my readings before adding CO2 and then each day for a week after adding CO2, so I could monitor any changes - - - there were no problems, everything settled well within safe limits.
A gradual decrease in PH and an increase in CO2. My fish became more active and within a week there was a noticable increase in plant growth. Also I got an increase in algae during the first week or so, apparently this is normal. It cleared withing 3 weeks as the plant growth really took off ..... and my otocinclus and amano shrimp enjoyed the feast !
You might want to take a photo of the tank 'Pre-CO2' and then another one about 10 days or 2 weeks after CO2, you'll be suprised at the difference !
Mr G (Al)