Here is a list of veggies and their calcium concentrations I found at www.applesnail.net there is also a list of the calcium to phosphorous ratio as this is also important for inverts. Phosphorous is known to cloud water, so when feeding veggies high in phosphorous be sure to be every dilligent with the water changes.
This is a list of vegetables and fruits along with the amount of calcium in each 100 gram portion. They are ranked in order from the ones that contain the most calcium to the ones that contain the least. I would caution us all to remember when feeding these foods that the phosphorous can have an ill effect on your water quality and may cause an algae bloom if the levels of phosphorous become too high.
Vegetables Calcium per 100 gram serving:
Dill Weed 208 mg
Turnip Greens 190 mg
Collards 145 mg
Parsley 138 mg
Kale 135 mg
Watercress 120 mg
Beet Greens 119 mg
Chinese Cabbage 105 mg
Mustard Greens 103 mg
Chicory Greens 100 mg
Spinach 99 mg
Okra 81 mg
Leaf Lettuce 68 mg
Cilantro 67 mg
Purslane 65 mg
Endive 52 mg
Swiss Chard 51 mg
Broccoli 48 mg
Cabbage 47 mg
Rutabaga 47 mg
Brussel Sprouts 42 mg
Celery 40 mg
Sweet Potato Leaves 37 mg
Green Beans 37 mg
Romaine Lettuce 36 mg
Parsnips 36 mg
Head Lettuce 32 mg
Alfalfa Sprouts 32 mg
Squash (winter, all varieties) 31 mg
Turnip 30 mg
Carrots 27 mg
Kohlrabi 24 mg
Sweet Potato 22 mg
Cauliflower 22 mg
Asparagus 21 mg
Pumpkin 21 mg
Squash (summer, all varieties) 20 mg
Beets 16 mg
Cucumber (with skin) 14 mg
Red and Green Peppers 9 mg
Tomato 5 mg
White Corn 2 mg
Fruits Calcium per 100 gram Serving:
Seedless Raisins 49 mg
Orange 40 mg
Lime 33 mg
Blackberries 32 mg
Kiwi 26 mg
Lemon (no peel) 26 mg
Papaya 24 mg
Raspberries 22 mg
Sweet Cherries 15 mg
Strawberries 14 mg
Tangerine 14 mg
Apricots 14 mg
Grapefruit, White 12 mg
Grapefruit, Red & Pink 11 mg
Pear 11 mg
Cantaloupe 11 mg
Grapes 11 mg
Mango 10 mg
Watermelon 8 mg
Persimmon, Japanese 8 mg
Pineapple 7 mg
Apple (with skin) 7 mg
Cranberries 7 mg
Banana 6 mg
Honeydew Melon 6 mg
Blueberries 6 mg
Casaba Melon 5 mg
Nectarine 5 mg
Peach 5 mg
Plum 4 mg
Calcium
hosphorus Ratio -- Vegetables
14.5:1 -- Collards
7.5:1 -- Spinach, Mustard
4.5:1 -- Turnip Greens
4.3:1 -- Lambsquarters
3.2:1 -- Dill Weed
3.0:1 -- Beet Greens
2.8:1 -- Dandelion Greens
2.8:1 -- Chinese Cabbage (pak-choi)
2.7:1 -- Lettuce, LooseLeaf
2.4:1 -- Mustard Greens
2.4:1 -- Parsley
2.4:1 -- Kale
2.1:1 -- Chicory Greens
2.0:1 -- Spinach
2.0:1 -- Watercress
2.0:1 -- Cabbage
1.9:1 -- Endive
1.6:1 -- Celery
1.5:1 -- Purslane
1.4:1 -- Cilantro
1.4:1 -- Lettuce, Butterhead (Boston, Bibb)
1.3:1 -- Okra
1.1:1 -- Swiss Chard
1.1:1 -- Turnip
1.1:1 -- Chard, Swiss
1.0:1 -- Squash (winter, all varieties)
1.0:1 -- Green Beans
0.8:1 -- Lettuce, Romaine
0.8:1 -- Sweet Potato
0.8:1 -- Rutabaga
0.7:1 -- Broccoli
0.7:1 -- Cucumber (with skin)
0.6:1 -- Carrots
0.6:1 -- Squash (summer, all varieties)
0.6:1 -- Carrots, Baby
0.6:1 -- Brussels Sprouts
0.5:1 -- Cauliflower
0.5:1 -- Kohlrabi
0.5:1 -- Pumpkin
0.5:1 -- Alfalfa Sprouts
0.5:1 -- Parsnips
0.5:1 -- Peppers,Green
0.5:1 -- Peppers,Red
0.4:1 -- Sweet Potato Leaves
0.4:1 -- Beets
0.4:1 -- Asparagus
0.2:1 -- Tomato
.02:1 -- Corn, White
Calcium
hosphorus Ratio -- Fruits
4.8:1 -- Papaya
2.9:1 -- Orange
1.8:1 -- Lime
1.8:1 -- Raspberries
1.6:1 -- Lemon (no peel)
1.5:1 -- Blackberries
1.5:1 -- Grapefruit, White
1.2:1 -- Grapefruit, Pink and Red
1.2:1 -- Tangerine
1.0:1 -- Pineapple
1.0:1 -- Pear
1.0:1 -- Apple (with Skin)
0.9:1 -- Mango
0.9:1 -- Watermelon
0.8:1 -- Cherries, Sweet
0.8:1 -- Grapes
0.8:1 -- Cranberries
0.7:1 -- Casaba Melon
0.7:1 -- Apricots
0.7:1 -- Kiwi
0.7:1 -- Strawberries
0.6:1 -- Cantaloupe
0.6:1 -- Honeydew Melon
0.6:1 -- Blueberries
0.5:1 -- Persimmon, Japanese
0.5:1 -- Raisins, Seedless
0.4:1 -- Peach
0.4:1 -- Plum
0.3:1 -- Nectarine
0.3:1 -- Banana
(You want things that are high on both lists.
This is a list of vegetables and fruits along with the amount of calcium in each 100 gram portion. They are ranked in order from the ones that contain the most calcium to the ones that contain the least. I would caution us all to remember when feeding these foods that the phosphorous can have an ill effect on your water quality and may cause an algae bloom if the levels of phosphorous become too high.
Vegetables Calcium per 100 gram serving:
Dill Weed 208 mg
Turnip Greens 190 mg
Collards 145 mg
Parsley 138 mg
Kale 135 mg
Watercress 120 mg
Beet Greens 119 mg
Chinese Cabbage 105 mg
Mustard Greens 103 mg
Chicory Greens 100 mg
Spinach 99 mg
Okra 81 mg
Leaf Lettuce 68 mg
Cilantro 67 mg
Purslane 65 mg
Endive 52 mg
Swiss Chard 51 mg
Broccoli 48 mg
Cabbage 47 mg
Rutabaga 47 mg
Brussel Sprouts 42 mg
Celery 40 mg
Sweet Potato Leaves 37 mg
Green Beans 37 mg
Romaine Lettuce 36 mg
Parsnips 36 mg
Head Lettuce 32 mg
Alfalfa Sprouts 32 mg
Squash (winter, all varieties) 31 mg
Turnip 30 mg
Carrots 27 mg
Kohlrabi 24 mg
Sweet Potato 22 mg
Cauliflower 22 mg
Asparagus 21 mg
Pumpkin 21 mg
Squash (summer, all varieties) 20 mg
Beets 16 mg
Cucumber (with skin) 14 mg
Red and Green Peppers 9 mg
Tomato 5 mg
White Corn 2 mg
Fruits Calcium per 100 gram Serving:
Seedless Raisins 49 mg
Orange 40 mg
Lime 33 mg
Blackberries 32 mg
Kiwi 26 mg
Lemon (no peel) 26 mg
Papaya 24 mg
Raspberries 22 mg
Sweet Cherries 15 mg
Strawberries 14 mg
Tangerine 14 mg
Apricots 14 mg
Grapefruit, White 12 mg
Grapefruit, Red & Pink 11 mg
Pear 11 mg
Cantaloupe 11 mg
Grapes 11 mg
Mango 10 mg
Watermelon 8 mg
Persimmon, Japanese 8 mg
Pineapple 7 mg
Apple (with skin) 7 mg
Cranberries 7 mg
Banana 6 mg
Honeydew Melon 6 mg
Blueberries 6 mg
Casaba Melon 5 mg
Nectarine 5 mg
Peach 5 mg
Plum 4 mg
Calcium

14.5:1 -- Collards
7.5:1 -- Spinach, Mustard
4.5:1 -- Turnip Greens
4.3:1 -- Lambsquarters
3.2:1 -- Dill Weed
3.0:1 -- Beet Greens
2.8:1 -- Dandelion Greens
2.8:1 -- Chinese Cabbage (pak-choi)
2.7:1 -- Lettuce, LooseLeaf
2.4:1 -- Mustard Greens
2.4:1 -- Parsley
2.4:1 -- Kale
2.1:1 -- Chicory Greens
2.0:1 -- Spinach
2.0:1 -- Watercress
2.0:1 -- Cabbage
1.9:1 -- Endive
1.6:1 -- Celery
1.5:1 -- Purslane
1.4:1 -- Cilantro
1.4:1 -- Lettuce, Butterhead (Boston, Bibb)
1.3:1 -- Okra
1.1:1 -- Swiss Chard
1.1:1 -- Turnip
1.1:1 -- Chard, Swiss
1.0:1 -- Squash (winter, all varieties)
1.0:1 -- Green Beans
0.8:1 -- Lettuce, Romaine
0.8:1 -- Sweet Potato
0.8:1 -- Rutabaga
0.7:1 -- Broccoli
0.7:1 -- Cucumber (with skin)
0.6:1 -- Carrots
0.6:1 -- Squash (summer, all varieties)
0.6:1 -- Carrots, Baby
0.6:1 -- Brussels Sprouts
0.5:1 -- Cauliflower
0.5:1 -- Kohlrabi
0.5:1 -- Pumpkin
0.5:1 -- Alfalfa Sprouts
0.5:1 -- Parsnips
0.5:1 -- Peppers,Green
0.5:1 -- Peppers,Red
0.4:1 -- Sweet Potato Leaves
0.4:1 -- Beets
0.4:1 -- Asparagus
0.2:1 -- Tomato
.02:1 -- Corn, White
Calcium

4.8:1 -- Papaya
2.9:1 -- Orange
1.8:1 -- Lime
1.8:1 -- Raspberries
1.6:1 -- Lemon (no peel)
1.5:1 -- Blackberries
1.5:1 -- Grapefruit, White
1.2:1 -- Grapefruit, Pink and Red
1.2:1 -- Tangerine
1.0:1 -- Pineapple
1.0:1 -- Pear
1.0:1 -- Apple (with Skin)
0.9:1 -- Mango
0.9:1 -- Watermelon
0.8:1 -- Cherries, Sweet
0.8:1 -- Grapes
0.8:1 -- Cranberries
0.7:1 -- Casaba Melon
0.7:1 -- Apricots
0.7:1 -- Kiwi
0.7:1 -- Strawberries
0.6:1 -- Cantaloupe
0.6:1 -- Honeydew Melon
0.6:1 -- Blueberries
0.5:1 -- Persimmon, Japanese
0.5:1 -- Raisins, Seedless
0.4:1 -- Peach
0.4:1 -- Plum
0.3:1 -- Nectarine
0.3:1 -- Banana
(You want things that are high on both lists.