Hello! I've recently (2 weeks ago) set up a 40 gallon breeder tank with 3 tiger gouramis 3 opal gouramis and some small tetras. I felt as if I was cycling my tank successfully until I tested for ph today and it was lighter than any color on the chart I tested again to make sure it wasn't a false test. I have some pieces of driftwood in the tank and had read about tannis, i'm 100% sure it has nothing to do with that. The tank is moderately planted with a well rinsed pool filter sand top layer and a Seachem flourite substrate on the bottom. I do 30%-45% water changes every other day. I have an aquaclear 70 HOB filter running bio-max, Carbon also a home made top mount sump from a gardening bucket with lava rock for media and an activated charcoal bag in the sump as well. My ammonia level are less than 0.05. I havn't added any Ph Up or Ph Down yet but bought it just in case. None of the fish seem distressed and all are eating and swimming perfectly fine.