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I have noticed that the PH on my tank has been rising and was quite happy about that as it was then getting into the perfect parameters. I set up the tank June 2018 and the Ph was 5.5, then end september it had got to Ph6, then by end december it had got to 6.5, the last 2 weeks it is registering 7. Mathematically if I up the water changes each week from 2L to 4L, that should reduce the Ph from 7 to 6.7 so I will probably do that as I should be able to manage that! The PH tests of coarse only register at half a PH intervals so I can never be 100% sure what it is beyond that. The zerowater, even after 10 days in a bottle is Ph5 as I tested that today. I haven't seen any evidence of any problems in the tank, other than there are too many shrimps in there (that maybe part of the problem). No weird behaviour or deaths that I have seen so far. The only unknown is there are a few geodes in the tank and I will 'consider' taking them out but I do like them in there............ 1) Is it safe to drop the Ph by that much in a day, over 8 hours using a dripper? 2) Is there anything else I should do, but bear in mind my health is seriously crap so anything big like changing the substrate etc is completely out of the question, but all thoughts will be gratefully received? I am not over bothered at this stage as all is fine with the shrimps but I would rather keep on top of it rather than wait until some disaster happens. You never know, there may even be a plus side to it being Ph7, ie it might reduce breeding? Simon Update 21/3/19 - Just in case anyone is interested, I removed the geodes and have done a 3L water change (about 12%). I will do 3L water change weekly from now on (instead of 2L) and I replaced the geodes with what I can only describe as a stripey/marbley type rock from my oldest tank, so I don't think that will (hasn't so far, as far as I know anyway) alter the Ph??? Fingers crossed anyway! Simon

I have been using the camera and thought I would post some update pictures as the original item was done about 3 months ago. I have tried to take similar photos to the originals so that a comparison can be made and everything is working well still with the zerowater jug tap water (as alternative to RO water), in fact too well as you can see from the photos (sorry about the flash in the first one). All the water parameters have stayed steady (and good) through out and the only thing I have had to start doing is cleaning the filter sponges twice a week due to explosion in the number of shrimps, and culling a few each week for same reason, but may need to increase that!!!! Simon