Category: Orchid Doctor

WATER (GENERAL): Testing for Water Content in Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago An electronic moisture meter (M-Scape Moisture Comparator) is useful to determine whether there is water in the root zone. OD65-172 Read More

WATER (GENERAL): To Change the Ph Level

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If the reading is below 5.0 it can be raised by adding sodium hydroxide; a local water conditioning company could advise. A88-35 Read More

WATER (GENERAL): Trace Elements in

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many water supplies contain useful amounts if they are about 40ppm calcium, 20ppm magnesium, 2ppm iron, and less than 1ppm. of boron, zinc, copper, magnesium, sodium or chloride, you do not need to... Read More

WATER (GENERAL): Treatment in Holding Tanks

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Contamination of water by bacteria, etc., can be eliminated by excluding all light and treating the tank with 45 grams (H oz.) of 35% Lesan, or, 23 grams (1 oz.) of 70% Lesan per 100 gallons of wat... Read More

WATER (GENERAL): Well Water

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is it too alkaline with a pH of 8?; the total salt content should be determined to see if the pH is significant and warrants treatment;for acidifying it is better to use nitric acid or nitric combi... Read More

WATER (GENERAL): Well-water Is Cleared Not Only of Saline Content

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A reverse-osmosis system clears out also minerals that are good for the plants; to replace them regular soluble fertilizer is satisfactory for an organic potting mix, to replace the calcium lost ad... Read More

WATER BALANCE (HARD): A Problem or Not?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Hard water is not usually a problem, the calcium in it is often helpful to the plant, but if sprayed on leaves the calcium film can reduce light availability. A85-1232 Read More

WATER BALANCE (HARD): Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It has a concentration of either calcium or magnesium salts; It is considered "hard" with 150ppm. of CaC03, but 300ppm. has been used successfully with plants; keep it off the leaves or it will red... Read More

WATER BALANCE (HARD): Classification

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Less than 175ppm. is best; 175 to 525 is good; 525-875ppm., use it with caution; over 875ppm. find a new source. AH86-95 Read More

WATER BALANCE (HARD): Hardness and Fertilizing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The suggested dilutions on one patented fertilizer container varies according to the hardness of the water. OR81-184 Read More