I have a problem with hazy water )not cloudy).
My 75 gallon planted tank has been set up for 4 weeks. I probably have easily 175-200 assorted plants (mostly fast growing). Plant growth is excellent. Algae is basically non existent.
I have 7 true SAE’s as well as 6 Lemon Tetras. There has never been any ammonia or nitrite and I wouldn’t expect to have any with the amount of plants I have. I have had the SAE’s since day one and hadn’t fed them. I just got the Tetra’s and have fed them lightly. With regards to the tank itself, I have 4" layer of flourite with Duplarite G (Dupla's laterite) mixed in the bottom 1/3 layer.
- Heating cables under substrate.
- Eheim 2217 cannister filter.
- Water is 100% RO/DI with Seachem Equilibrium and Alkaline Buffer. PH= 6.9, GH= 6-7 dkh, KH= 4 dkh. The other parameters are:
Ammonia, nitrite, nitrate, phosphate all = 0.
- Compact lighting- 260 watts. Presently have half the wattage on 8 hrs a day and the full 260 watts on 4 hours a day.
- Pressurized CO2 system with controller.
I did the first water change at 2 weeks (15%) and have done the same each weekend and the water looked crystal clear. I started dosing small does of Seachem Flourish and also their iron about 2 weeks ago. A week ago (on Saturday) I added their potassium (also like a half dose to start). At that time the water was crystal clear. On the following Tuesday the water looked a little hazy (3 ˝ weeks after tank was set up) and still has. It is not cloudy at all and really to consider is hazy you need to look at the side of the tank looking long ways. I did another water change yesterday and added the fertilizers mentioned above, but I also added Seachem Flourish root tabs to the substrate.
Would you have any idea as to why the haziness? Could the potassium be the problem? I kind of sounds like a bacterial bloom but why now instead of the beginning? I appreciate your help.