OK, here goes. I have a Juwel Vision 260 tank. Ive had it for 3 years so its fully cycled an everything with some fish in it. 1 Pleco, 1 Jack Dempsy, 1 Blue Acara, 1 Tilipia Mariae, 1 Cupido & 1 Parrot Chiclid. My pH has always been at 6.5. Now last week i thought i wood put in some bogwood to...