Backyard Aquaponics
A place to discuss aquaponics

Sorry for the long post
...but the link was an issue
Hope this is worth the space...

This is a breakdown of the potassium content of fruit & veg...
Fruits
As I have just started feeding excess peas to my trout...
I thought about other excess produce...
I don't know how the digestive process will change the raw
potassium

Serving = ½ cup raw unless stated otherwise (ie whole, medium, canned)
Low Potassium: Less than 120 milligrams
Apples, peeled & slices 62
Applesauce, canned 78-92
Apricot, 1 medium 105
Blueberries 65
Cranberry sauce 36
Fig, 1 medium 116
Fruit cocktail 114
Grapes, ten 93-105
Lemon, 1 medium 80
Peaches, canned 118
Pears, canned 83
Pineapple, diced 88
Plums, 1 medium 118
Raspberries 94
Watermelon, diced 93
Medium Potassium: 121 – 250 milligrams
Apricots, canned 181
Blackberries 141
Cherries, sweet, ten 152
Grapefruit, ½ medium or canned 165
Orange, 1 medium 237
Peach, 1 medium or canned 165
Pear, Asian, 2 medium 148
Pear, Bartlett, 1 medium 208
Pear, D’Anjou, 1 medium 250
Pineapple, canned, heavy syrup 133
Pineapple, canned,juice pack 153
Plums, canned 194
Raspberries, frozen,sweetened 143
Strawberries, whole 124
Tangerine, 1 medium 132
High Potassium: 251 milligrams or more
Apricots, dried 895
Avocado, California, ½ medium 549
Avocado, Florida, ½ medium 742
Banana, medium 451
Cantaloupe, ¼ medium 413
Dates, chopped 581
Figs, dried, five 666
Honeydew melon, ¼ medium 875
Kiwi fruit, 1 medium 252
Mango, 1 medium 323
Nectarine, 1medium 288
Papaya, 1/e medium 390
Peaches,dried, uncooked 797
Peaches,dried, cooked, unsweetened, with liquid 413
Prunes, dried, uncooked, 5 large 365
Raisins, seedless 545

Vegetables
Serving = ½ cup raw unless stated otherwise
Low Potassium: up to 125 milligrams
Alfalfa sprouts, raw 13
Beans, green 76
Bean sprouts 63-78
Cabbage, raw 72-86
Cauliflower 125
Carrots, cooked from frozen 116
Collards, cooked from raw 84
Corn, cooked from frozen 114
Cucumbers, sliced 84
Eggplant, steamed 119
Endive, raw 79
Leeks, raw 94
Leeks, cooked from raw 46
Lettuce, iceberg, 1 cup 87
Onions, raw, diced 124
Peppers, sweet, raw 89
Peppers, sweet, cooked 113
Popcorn, air popped, 1 cup 20
Water chestnuts, canned 83
Turnips, cooked 106

Medium Potassium: 126 – 250 milligrams
Asparagus, cooked from frozen 196
Beans, green, cooked from raw 185
Broccoli, cooked from raw 127
Broccoli, cooked from frozen 167
Cabbage, common, cooked 154
Carrots, cooked from raw 177
Cauliflower, raw flowerets 178
Cauliflower, cooked from raw 202
Celery, raw, diced 171
Chickpeas, cooked, drained 239
Collards, cooked from frozen 214
Corn, cooked from raw 204
Kale, cooked from raw 148
Kale, cooked from frozen 209
Lettuce, romaine, 1 cup 148
Mushrooms, raw 130
Onions, cooked 160
Peas, edible pod, cooked 192
Peas, green, cooked from frozen 134
Peppers, hot chili, 1 raw 153
Radishes, raw 144
Squash, summer, cooked 173
Spinach, raw, chopped 154
Turnip greens, cooked 146-184

High Potassium: 251 milligrams or more
Artichoke, 1 medium 425
Asparagus, cooked from raw 279
Beans, black, cooked, drained 306
Beans, lima, cooked from frozen 347-370
Beans, kidney, cooked 355
Beans, pinto, cooked, drained 398
Beets 265
Black eyed peas, cooked from frozen 319
Black eyes peas, cooked from raw 246
Brussel sprouts, cooked from raw 246
Cabbage, bok choy 316
Lettuce, Boston, 1 5” head 419
Lentils, cooked 366
Mushrooms, cooked 278
Okra, sliced, cooked from raw 257
Parsnips, cooked 287
Peanuts, oil roasted, unsalted 491
Potato, baked, 1 large, no skin 610
Potato, baked, 1 large with skin 844
Potato, boiled, no skin 256
Pumpkin, canned 253
Soybeans, cooked 486
Spinach, cooked from raw 420
Spinch, cooked from frozen 283
Squash, winter, cooked 448
Sweet potato, 1 medium 397
Swiss chard, cooked from raw 483
Tomato, raw, 1 medium 251-273

protein content of ...
Beans / Peas (100grams) Protein Fat
Aduki Beans 9g 0.3g
Black gram 8g 0.5g
Mange-tout Peas 3g 0.2g
Mung Beans 7.4g 0.5g
Baked Beans canned 5g 0.5g
Beansprouts 3g 0.5g
Mushy Peas (canned) 6g 1g
Processed Peas (canned) 7g 1g
Red Kidney Beans 8g 0.5g
Blackeye Beans 8.5g 0.9g
Broad Beans 8g 0.7g
Butter Beans 6g 0.5g
Chick Peas 8g 2g
Green Beans 1.5g 0.2g
Runner Beans 1.4g 0.5g
Soya Beans 14g 7g
In the following table is protein content of foods.
High protein foods are at the top and those with low protein content
at the bottom.

Protein sources...
Protein content (% of dry matter)
Asparagus, frozen 36.10
Broccoli, frozen 33.60
Peanuts 29.57
Cauliflower, cooked 27.34
Peas, black eyed, frozen 27.00
Noodles, egg, cooked 19.45
Bean, green, frozen 18.10
Bread, whole wheat 17.13
Walnuts 16.72
Spagheti, whole wheat 15.87
Macaroni 15.54
Bread, white 14.33
Potato, with skin, baked 11.74
Canteloupe 11.33
Celery 11.24
Avocado 10.65
Strawberry, fresh 7.53
Rice, boiled 7.32
Navel orange 7.21
Carrots, cooked 6.46
Watermelon 6.40
Banana 5.14
Raisin, seedless 3.88
Peaches, canned 3.68
Blueberry 3.25
Pineapple, canned 2.93
Apple, juice 0.50
Apple, Red Delicious, peeled 0.32

well done for the HUGE effort in the script potassium is a big thing in AP for alot of reasons. Still trying to figure out OBO's combo, for the lettuce he grew, should take a pick of mine, they are true runts

Consider Comfrey. Very rich in potassium. The plant's root system accumulates potassium from deep in the subsoil. Best introduced as a liquid feed. Although this liquid feed will promote flowers and fruit it can be too strong for general use.

It likes shady damp conditions rich in humus. And can grow like crazy... but so many uses this is a bonus.

Cut fresh leaves and pack tightly in a container that has a tap below to draw off the very dark liquid that forms. Keep in a bottle in a dark place and when ready to use, dilute to about 15 parts water. You can spray on leaves in an AP system as a foliar feed. It truly is a remarkable plant.

Check out this site... http://www.the-organic-gardener.com/Com ... #Balance_C

Hope this is helpful to someone!

fantastic. how did i forget that lovely plant.

C1 on your list you forgot Moringa

Sorry F&F I thought we had that covered

jessy - Fish food, and seasol. Thats all.

Temperature may play a part as well - I'll find out as summer goes on.

Hey I'm doing aquaponics for a science fair (I will post a thread tommorow hopefullly). I seem to have a potassium deficiency and am wondering how to supplement my system safely. I have access to potassium sulfate. Is it safe for the fish and will it alter ph??? I've been reading alot but can't seem to figure out anything for sure.

Google is your friend.

http://www.aquariumadvice.com/forums/f24/dosing-potassium-sulfate-77892.html

Aparently it is fine.