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when plants use carbonates the leaves usually get heavy with precipitated calcium carbonate = pretty ugly look. The process by which this happens is called biogenic decalcification

turn CO2 up..fish die....turn it down...fish don't die...have you thought about using the low range pH test kit? (the high range stops at 7.4) yeesh makes me wonder if CO2 injection needs a permit from the fish shop.

I've never used drop checker or bubble counter... I use pH profile relative to degassed pH. Pearling plants and fish distress are then the two markers to look for, again this is all done on a day when you can monitor the injection. Fundamentally don't let bps / dropchecker override your...

I trialled it for a about 6 weeks, no benefit really. Massive downside is you cane the CO2. Now I just inject for about 5 hours in the morning, mainly before lights on and limited surface agitation results in about the same thing

Usually fish acclimatise pretty quick so long as they are given a no CO2 start point...when fish are consistently struggling when other fish are fine can indicate that the fish are affected by parasites in their gills, the fact that you say the fish are a bit weedy could again indicate they have...

problem isn't fish getting the oxygen, it's the fact that the CO2 they respire cannot diffuse from the gills when the concentration of CO2 is too high in the water, so the CO2 stays in the fish which can lead to acidosis of the blood. So increasing oxygen is not a safety net other than the...

I think I'd need to see pics / vid of the tank + info about the lights / filter / substrate etc to get a better overall feel for the health of the tank. What plants have you got etc? At the end of the day the nitrate is there to feed the plants, if it's not being taken up then it may well end...

shouldn't be a problem then if its plain old potassium nitrate. So you inject CO2 given you have a drop checker? could it just be CO2 that is causing the drop checker to turn yellow and the fish to gasp for breath?

drop checker indicates pH strictly and can rise and fall depending on CO2, and other chemicals that add to the acid profile of the water...another of which can be ammonium nitrate, which can form nitric acid. It begs the question what brand of nitrate are you using and how much?

I've gone the other way with my CO2 thinking from 24 hrs aggressive CO2 / flow to low rate, short period inline CO2 injection with no surface agitation. Through experimenting with different methods, I realised that equilibrium, high, yet safe concentrations of CO2 can be created by tuning your...

hi, this was in the spirit of experimentation, I too saw that tank (alan the rare plant man's?) so wanted to see what effect there may be...I also reckon "folks" get hammered down a bit before checking things out for themselves on forums, etc There are people who swear by the method, I tried...

yes i agree, I guess there are plenty of balance points: low injection / low gassing off, high injection / high surface agitation. I've not tested whether this will lead to different stability conc of dissolved CO2 or not, eg low injection plateau at ph 6.8, high injection 6.4 etc....either...

Hi I've been running CO2 constantly 24/7 along with strong surface agitation to maintain a constant amount of dissolved CO2, just to see how you could interplay gas injection with gassing off. I kept the ph stable and down from 7.6 to 6.6 for about six weeks this way. Pros: you maintain a...

might sound funny, but how did you find the leaky section? cheers

ista max mix is a cheap and effective inline reactor that I've been using with happy results, they cost about £7-10 for a medium that will work for upto about 300l I reckon. I'm running one on a 270l tank. CO2 gets fully dissolved.