Tom Barr's general water hardness booster contains: 3 parts Potassium Sulfate, 3 parts Calcium Sulfate, 1 part Magnesium Sulfate by weight. 1 lb. One Tablespoon or 16 grams will raise the GH of 20 gallons of water by 3 degrees or 1 meg/liter.

Calcium Chloride
1 lb. CaCl2
Calcium is important for cell wall strength and thickness of stems. Chloride is used for photosynthesis.

There are 50 g in 1/4 cup of calcium chloride.

Calcium Nitrate
1 lb. CaNO3
Provides calcium and nitrates in a water soluble form. Potassium nitrate alternative for international customers. 19.0% - 15.5%

There are 65 g in 1/4 cup of calcium nitrate.

Calcium Sulfate
1 lb CaSO4
AKA Gypsum supplies calcium to plants without increasing alkalinity.

There are 50 g in 1/4 cup of calcium sulfate.

Dolomitic Calcium carbonate 1 lb
A magnesium source that lowers acidity / increases alkalinity.

There are 50 g in 1/4 cup of dolomite.

8 oz. food grade ferrous gluconate.
100% ferrous gluconate dihydrate
Mix 1/8 cup (20 g) ferrous gluconate in 1 cup water (250 ml) water to make 10,000 ppm solution. Add 1/8 teaspoon (0.625 ml) of this stock solution to 12.5 gallons (47.3 L) water for an initial concentration of 0.26 ppm. Periodically add stock solution at this dosage or as required to maintain about 0.10 ppm iron in solution. Mix and dose iron compounds separately from other fertilizers to avoid tank cloudiness. Adding a small amount (3-5 ml) of vinegar to the solution will help with bioavailablility.

16 ounce (480 ml) graduated dispenser bottle that is perfect for measuring and pouring fertilizer into your aquarium. Small measuring chamber doses in 5 ml, 15 ml and 30 ml.

Bottle has two necks, one for filling and one for dispensing. Neck chamber dispenses in 5 ml, 15 ml and 30 ml (1 ounce).

Iron chelate 10% 8 ounces
Chelated with DTPA (diethylenetriamine pentaacetate).
Mix and dose iron compounds separately from other fertilizers to avoid tank cloudiness. Adding a small amount (3-5 ml) of vinegar to the solution will help the iron be more bioavailable.

Iron chelate 10% chelated with diethylenetriamine pentaacetate
Derived from sodium ferric diethylenetriamine pentaacetate
Moisture content not more than 7%. 

Mix 1/8 cup (20 g) iron chelate with DTPA in 1/4 cup (62.5 ml) water to make 10,000 ppm solution. Add 1/8 teaspoon (0.625 ml) of this stock solution to 12.5 gallons (47.3 L) water for an initial concentration of 0.26 ppm. Periodically add stock solution at this dosage or as required to maintain about 0.10 ppm iron in solution. 

Macro Micro Nutrient Mix 1 lb contains 1 equal part each of Potassium Nitrate, Potassium Sulfate, Magnesium Sulfate, Nutritrace CSM+B.
See mixing and dosing instructions in the FAQ's. Graduated dispenser is excellent tool for mixing and dosing this product.

Macro Micro Nutrient Mix instructions: Mix with a ratio of 1/4 cup of Macro Micro Nutrient Mix to 2 cups water (or 60g to 500 ml). Dose 1-4 drops per gallon per day. One gallon is equal to 3.785 liters. Start with the lowest dose of 1 drop per gallon per day and stay with that dose for 2-3 weeks before deciding to increase the dose. Increase the dose based on the needs of your plants. There are 75 drops in a teaspoon. The 16 ounce (500 ml) graduated dispenser bottles we sell make mixing and dosing easier. These are sold individually and with one lb. of Macro Micro Nutrient Mix as a bonus buy.

1 lb Macro Micro Nutrient Mix plus 16 oz (500 ml) graduated dispenser bottle

Macro Micro Nutrient Mix (equal parts Plantex CSM + boron, Potassium Nitrate, Potassium Sulfate, Magnesium Sulfate) and 16 oz (500 ml) graduated dispenser bottle

Macro Micro Nutrient Mix instructions: Mix with a ratio of 1/4 cup of Macro Micro Nutrient Mix to 2 cups water (or 60g to 500 ml). Dose 1-4 drops per gallon per day. One gallon is equal to 3.785 liters. Start with the lowest dose of 1 drop per gallon per day and stay with that dose for 2-3 weeks before deciding to increase the dose. Increase the dose based on the needs of your plants. There are 75 drops in a teaspoon. The 16 ounce (500 ml) graduated dispenser bottles we sell make mixing and dosing easier. These are sold individually and with one lb. of Macro Micro Nutrient Mix as a bonus buy.

Equal part mixture by weight of KNO3, KNO4, MgSO4 and MKP

Equal part mixture of potassium nitrate, potassium sulfate, magnesium sulfate and mono potassium phosphate. There are 60 g in 1/4 cup of macro mix.

Macro Mix plus a 16 ounce (500 ml) graduated dispenser bottle for ease of mixing and dosing

One lb. of Macro Mix is an equal part mixture of potassium nitrate, potassium sulfate, magnesium sulfate and mono potassium phosphate with a 16 ounce (500 ml) graduated dispenser bottle for mixing and dosing.

Magnesium Sulfate
1 lb. MgSO4
This is also known as Epsom Salts. MgSO4 helps improve flower blooming; enhances a plant's green color; and can even help plants grow bushier.

Magnesium sulfate is also known as Epsom Salts. This magnesium sulfate is in the form MgSO4*7H2O. There are 50 g in 1/4 cup of magnesium sulfate. 

Mono Potassium Phosphate 1 lb.
MKP or KH2PO4
0-51-34
Phosphates help convert other nutrients into usable building blocks for growth. It is a component of the complex nucleic acid structure of plants which regulates protein synthesis; cell division and development of new tissue.

 There are 70 g in 1/4 cup of monopotassium phosphate.

Nutritrace CSM+B 1 lb, a micro nutrient mix,
See mixing and dosing instructions in the FAQ's. Chemical analysis found in more information and FAQ's. Graduated dispenser bottle is an excellent tool for mixing and dosing this product.

Nutritrace CSM + B: Mix with a ratio of 1/4 cup of CSM + B to 2 cups water (or 60g to 500 ml). Dose 1-4 drops per gallon per day. One gallon is equal to 3.758 liters. Start with the lowest dose of 1 drop per gallon per day and stay with that dose for 2-3 weeks before deciding to increase the dose. Increase the dose based on the needs of your plants. There are 76 drops in a teaspoon. The 16 ounce (500 ml) graduated dispenser bottles we sell make mixing and dosing easier. These are sold individually and with one lb. of Nutritrace CSM as a bonus buy.

Guaranteed Analysis:
Total magnesium - water soluble chelated magnesium           1.5%
Copper   -chelated                                                                    0.1%
Iron - chelated                                                                          7.0%
Manganese - chelated                                                              2.0%
Molybdenum                                                                           0.06%
Zinc - chelated                                                                        0.40%
Boron                                                                                        3.8%
EDTA - minimum content                                                        65.4%

Nutritrace CSM with boron 1 lb plus 16 oz (500 ml) graduated dispenser bottle

Nutritrace CSM + B: Mix with a ratio of 1/4 cup of CSM + B to 2 cups water (or 60g to 500 ml). Dose 1-4 drops per gallon per day. One gallon is equal to 3.758 liters. Start with the lowest dose of 1 drop per gallon per day and stay with that dose for 2-3 weeks before deciding to increase the dose. Increase the dose based on the needs of your plants. There are 76 drops in a teaspoon. The 16 ounce (500 ml) graduated dispenser bottles we sell make mixing and dosing easier. These are sold individually and with one lb. of Nutritrace CSM as a bonus buy.

Potassium Nitrate
1 lb KNO3
13.5-0-46.2
Potassium is an essential plant nutrient and is required in large amounts for proper growth and reproduction.

International customers: Consider buying Calcium Nitrate and Potassium Sulfate instead. Potassium nitrate is an oxidizer. We will not ship more than 4 lbs of potassium nitrate outside the USA or Canada. Aquariumfertilizer.com has a permit filed with the Canadian Department of Natural Resources.

Potassium nitrate is a naturally occurring mineral source of nitrates, KNO3. There are 70 g in 1/4 cup of potassium nitrate.

Potassium Sulfate
1 lb. K2SO4
0-0-50
Potassium is an essential plant nutrient and is required in large amounts for proper growth and reproduction.

There are 80 g in 1/4 cup of potassium sulfate.