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That means the RO filter is over saturated and cannot hold any more. It is letting things pass that would have been filtered. That includes chlorine and chloramine. Hope you used a dechlorinator. It should be ok if TDS was reading under 10, but I wouldn't trust anything above 10. As Simon mentioned, you can turn the heat up a bit aim for ~28degC.

ok so, yes i used De-chlorinater dont worry. i also only really did about a third of the scapping as im interchanging decor. When it comes to doing the 90% water change unfortunately my health has deteriorated and i got told on Thursday i need quite invasive life extending surgery and i dont even really think i should have filled the 42 liters ive got in there at the moment let alone doing it all over again, so that kind of just leaves me to wait until im getting 0 readings on the nitrate cycle and add fish. then a month after that add Shrimp. whilst checking conditions and doing water changes i can. also yes, i last counted 36 baby shrimps of varying size and 3 adults... i think the adults are doing nothing at all at the moment except hiding and breeding.