Just for those of you who are interested I set up another DIY CO2 bottle for my 10 gallon tank and this time injected it into a small bell.. well that made the difference - My tank parameters are now pH - 6.2 kH- 20ppm or 1.12 degrees C02 level - 21.2ppm And my plants are bubbling like crazy :) Just thought I'd let you know Thanks everyone for their previous help ! Jon H