thx for the input, I'll keep careful watch over my fish while I'm playing with increasing the CO2 level,
I guess the main question I'd like to ask in determining the CO2 levels in my tank is, is it possible to get a PPM level of CO2 with a pH meter and a conductivity that measures TDS in microsiemens?
and some more comments about my personal experience:
i've increased my bubble count of my co2 and made my reactor/difussor combo into something more effective/efficient (or so I think) the plants are greowing pretty crazy although I do keep pretty easy to keep plants:
+ i've added the elite mini powerhead/subfilter into the bottom of my tank for more circulation, I currently only have some BBA on my equipment and lower leaves otherwise everything seems healthy,
oh and i've recently started a dosing schedule like wolfy's and waiting for my gregwatson.com order to come in with some missing stuff (mainly phosphate but a little worried and have to be careful dosing this)
my plant list
Altenanthera neineckii 'roseafolia'
Anubias barteri 'coffeefolia'
Bacopa (carolinia or monnieri) it's the bigger leaf one i forgot i think it's carolinia
Hemianthus micranthemoides (ok this plant is annoying me since I would like a bush but I gave 10 stems I received off someone to my brother but his new snail ate it all then I realized I wanted this plant and my 1 tiny stem is bearly making a comeback ...)
hygrophilia corymbosa 'angustifolia' i believe it's this one the leaves are almost 10+' long and the stalk is kinda more woody than limpy
hygrophilia polysperma 'rosanervig'
ludwigia repens (i would like to get the 'rubin version'
Nesaea crassicaulis (currently have one stem)
these are the plants in my main tank, I plan to pull out a few species out soon, mainly rotala roundfolia and bacopa and the sunset hygro
plants I'm trying to get off some local people are:
Barclaya longifolia ‘red’
Lobelia cardinalis 'small form'
and plants in my low tech trying to be natural tank
cryptocoryne x willisii 'lucens'
Eusteralis stellata Sp
Originally Posted by Stu
At the start of the day (i.e, what has built up over night), levels are at approx 33ppm and this dips to about 30ppm at the end of the day due to utilisation by the plants. (These levels are auto-calculated for me by Aquarix software. By using Chuck's calculator I get higher readings, but since you can only enter values of pH and KH to 0.1 and not 0.01 accuracy, I go with Aquarix - might be wrong!)
To be honest, it's not easy to say what is an "acceptable" level as different experiences have occured with different people. Some run around 40ppm, some have seen no problems with 50ppm, I read a source somewhere that fish will tollerate up to 100's of ppm of CO2
, I would say that you have to take into account the species of fish exposed to the levels. Also, fish stock level, planting density, plant species, etc, etc..... again, hard to say definitively!
If you want to try more CO2
, the key is to trial it carefully, upping by small amounts, then monitoring fish (and plant) health before going for the next upping. Be aware of the nighttime increase though..... if you run close to the limit for fish during the day, you might not realise the toxicity of the level from the increase at night until it's too late.