Configuration changes

Earlier today, I recounted the cycling challenges that I was facing. In response, I made some changes to the tank configuration.

Changes

1. Replaced the 25 watt aquarium heater, which was meant for up to 6.6 gallons, to a 50 watt version with an adjustable thermostat. Because of the varying levels of the water, I had to mount it horizontally in order to keep it fully submerged. I really wanted to avoid buying one this close to warmer weather, but who knows how the weather is going to perform over the next month. It's better not to be pound-foolish.
2. Added an oxygen stone for help evening out the temperature.
3. Added a little aquarium structure. Based on what I read, the calcium carbonate needs something to adhere. It also looks better. I read that fish freak out if there is nothing in the tank except for them.
4. Added 20 drops of API pH UP to the 10-gallon tank (2 drops per gallon). I'm attempting to raise the pH of the tank to a range where the Nitrobacter will perform better. It's my hope, along with a water temperature increase, will jump-start the cycling since it's been so stagnant to me.  I will take another reading tomorrow and act accordingly. According to the original source within the aforelinked [yes, the word doesn't exist] Wikipedia entry, the two bacteria which move the nitrogen cycle along operate best in the following ranges:
• The optimum pH range for Nitrosomonas is between 7.8-8.0.
• The optimum pH range for Nitrobacter is between 7.3-7.5
5. The intake hose between the submersible pump and the growbed has been shortened. It has also been moved to the rear center of the tank.
6. As mentioned in the previous blog entry, the flow of the pump has been changed to approximately half its capacity.

Concerns

1. Could the addition of the API pH UP product have a negative effect upon the tank?
2. Is such a product safe for an aquaponics environment?

I will take a reading tomorrow and post my results in a new post.