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Hi All, Posted a few times regarding my crystal red shrimp and still not having much success. didn't realise my gH test kit was out of date and bought a new one. I have a HM- Digital Com 100 it has various settings 0.5 naci / 0.7 442 conversion ppm. At the time with the new test kit i measured the gH and was getting a reading of 7 . My old test kit was showing 5. On the conversion rate 0.5 was showing 120-130 tds and 0.7 160-170 tds. I'm not sure what setting is best. Showing a high GH i decided to drip with RO for several hours. Managed to get it down to 100-105 0.5 and 140-145 0.7 . gH is currently around 6 now and using the 17.6 for every 1 hardness its roughly around 105 tds . If i understand this correctly the tds won't just be 105 as there will be organics in the water as well so the tds will be higher . I know tds is only used as a guide but going by the information should i use 0.7 conversion ? I am still trying to bring the gh down to 5 so will leave it a week or two and repeat the process. Any help would be appreciated and hope this all makes sense.

I thought my crystals were starting to bounce back after seeing 3/4 berried females it's come to nothing and i have no shrimplets. On the other hand with the same parameters gH 7 and a tds around 160 the TB/Mischlings are having a massive baby boom, bigger than last year so i'm slightly confused. Crystals are currently around 145 tds and gH 6 . I don't want to drop the parameters too quick so i'll do another RO water change next week and this is for both tanks. I did move to a new remineraliser, i followed the instructions on the back but i suspect that i maybe should of been using the 0.7 conversion and have been adding a higher gh and tds water. I'm going to get my tanks back to 5 gH and see where the TDS settles. Added only 7ml instead of 10ml to a 20L container and the gH is showing 4 with a tds of around 85 . It's meant to be 5ml per 10L and should give you a gH 5 and 120 TDS. Going to start going around the 80-100 in my 20l container when doing water changes this way i know the gh will be closer to 4/5. I know , luckily in Scotland we are always on the cooler side but it's still early days for summer and never know what may happen.