a b "KH-7 Camera System- Part I". National Photographic Interpretation Center. July 1963. Archived from the original on 15 September 2012 . Retrieved 26 September 2011. KH is the invisible superhero in your tank that stops this from happening. As you see, it’s important to maintain some level of KH in your tank, no matter what species you keep. System configuration [ edit ] A KH-7 GAMBIT-1 launch configuration (with Agena D service module). A KH-7 GAMBIT-1 on-orbit configuration (w/o Agena D service module). A GAMBIT Reconnaissance System. A KH-7 GAMBIT in launch configuration on display at the National Museum of the United States Air Force in Dayton, Ohio. We would have preferred to run the entire Dakar, but at the moment the rules do not allow it,” explained Juvanteny to SoyMotor.com. “They do not foresee the use of hydrogen, so we have opted for this category since we could not be left without Dakar.”

Carbonate hardness is referred to as KH for short. It’s basically a measure of carbonates (CO3) and bicarbonates (HCO3) dissolved in your water.Note: The results of the test can be given in dKH or PPM. Which you use is a matter of choice. I personally use dKH and refer to it from now on. And if your water has a naturally high KH, then you have to lower that before you have any success at reducing the pH. Like Indian almond leaves, peat leaches tannic acid (tannins) into the water to reduce the KH and pH a bit. Again, it’s best used where only a small reduction in KH is needed.

Well, these acids react with the crushed coral, causing it to release calcium and carbonate into your water, raising both the KH and GH. Having a stable pH that is a little high is much better than a pH that swings up and down all the time. How do you test the KH of your aquarium?Who knew keeping goldfish could be so difficult! Next time someone offers free fish, I think I’ll politely decline. The problem is that I am attached to these things now more than the kids are. a b c Day, Dwayne A. (29 November 2010). "Ike's gambit: The development and operations of the KH-7 and KH-8 spy satellites". thespacereview.com . Retrieved 25 January 2009.

If you have a saltwater tank, it’s basically expected that you will have one of these units nearby. 4. Indian almond leafAcid buffers are primarily used in planted tanks where the plants remove the extra carbon dioxide from the water. Just before Christmas we got a brand new 30 gallon tank with filter, protein skimmer etc. Only have Walmart decorations and gravel. Ideally, you want to maintain at least some level of KH in your tank, no matter what type of species you keep. Let’s look at the suggested ranges for different types of aquariums. While the measurements can be listed as part per million (PPM), I prefer to use degrees of carbonate hardness (dKH).1 dKH is about equivalent to 17.9 ppm This is where it gets a little contradicting – it’s just stated the end of the test ould be when the test tube turns blue however the last step states: To determine the KH value total the number of drops that must be added to turn the water BRIGHT yellow.

My tank has inert decorations and substrate, and usually pH 7.0/KH 2. I added some activated carbon to filter out some planaria medication, and also lowered the temp from 27c to 24c (Added Caridina shrimp) and those things made my KH increase to 3 and pH to 7.5. While the set-up costs may be pricey, it will save you a considerable amount of money in the long term, especially if you buy bottles of distilled water each week. But here’s the thing. Those waterways have a LOT of other variables that help keep the pH level relatively stable. These can all be used interchangeably. So, if they ever come up in conversation, remember that they all refer to the same thing: My other problem was to keep my stable ph (6.8) stable 🙂 if i understand correct RO water has no ph/kh and doing 30% waterchange with RO water with only seachem equlibrium is good but not enough. I need to raise my RO water ph to 6.8 before adding it to the tank with some other chemicals or perhaps mixing RO with bottled water.All fish were quarantined and treated for a month in a separate tank. Fritz Paracleanse, Maracyn(Erythromycin), Ich-X, and deworming flake food on 3 cycles of 3 day series, 7 day break, and 1 drop of tea tree extract per gallon every month. I cannot seem to get the ammonia down. I do regular water changes of about 10% of the tank. I got a gravel vac and have used it twice in the past 2 weeks. We have a whole home soft water system, so any tap water I add sits out for 24 hrs before the change. For beginners, KH or carbonate hardness is one of the most overlooked and least understood elements of aquarium chemistry. And, I can’t help but feel that API not including a KH test in their master test kit is part of the reason. You know those beneficial bacteria that live in your filter, the ones you introduced when you cycled your tank? Well, they are to blame.