1lb sugar, 1 packet yeast, tubing, gallon milk jug, water

One of my readers informed me of a simple way to create and distribute CO2 indoors using a few inexpensive parts. You’ll need a one gallon milk jug, a pound of sugar, enough water to dissolve the sugar, a packet of yeast, and some tubing. Begin by drilling a small tight hole in the cap of your one gallon jug, then pass a length of 1/4” air tubing through it just enough so that it hangs inside the bottle. The other end should be placed near your plants, preferably behind a fan that will evenly distribute the CO2 throughout your garden area. Fill your container with one pound of sugar, add warm water and stir until completely dissolved (make sure you leave an air space at the top of the container so the tubing doesn’t go under water)  Add the packet of yeast, replace the cap and stir. CO2 will be released gradually as the yeast begins to digest the sugar. Recharge your “CO2 Generator” with fresh water, sugar and yeast once per week.

put a sponge or .5 gal perlite in a stocking in reservoir to keep good bacteria

acquarium rocks clog, use just a tube (bypas from pump)

Combating this problem is simple, once you know its causes. First of all, warm water holds less dissolved oxygen than cool water, so keep your nutrient temperature between 68-75 degrees F. Secondly, keep the nutrient circulating so it’s constantly picking up oxygen. Anywhere there is falling, spraying or rapidly moving
water, you can assume dissolved oxygen is being added. If you have a large reservoir
that circulates very slowly, adding a small aquarium pump can help supply extra
oxygenation. I have found however, that aquarium airstones clog with salts after just a
few weeks in a nutrient reservoir. Apreferred method is to take a small bypass off the
pump line to provide a bit of current within the reservoir. At the end of this bypass, I
attach the end of the airline so the bubbles and nutrient flow distribute evenly
throughout the reservoir.  Last but not least, providing a “bacterial breeding ground”
within your reservoir will help the good bacteria establish themselves and fend off the
anaerobic invaders. A sponge or porous bag of horticultural perlite submerged in your
reservoir will provide the perfect home for aerobic bacteria. I recommend using 1/2 
gal. of perlite in a stocking for every 25 gal. of reservoir.

Western brassicas

• Broccoli (Brassica oleracea Italica group)
• Brussels sprout (Brassica oleracea Gemmifera group)
• Cabbage (Brassica oleracea Capitata group)
• Cauliflower (Brassica oleracea Botrytis group)
• Kale (Brassica oleracea Acephala group)
• Rapini (Brassica rapa var. ruvo)

• Kai-lan (Brassica rapa var. alboglabra)
• Bok choy (also spelt Bok choi)(Brassica rapa var. chinensis) (Brassica rapa var. pekinensis)
• Komatsuna (Brassica rapa var. perviridis)
• Mizuna greens (Brassica rapa var. nipposinica)
• Oriental mustard (Brassica juncea)

Leafy and salad vegetables

• Amaranth (Amaranthus cruentus)
• Arugula (Eruca sativa)
• Bitterleaf (Vernonia calvoana)
• Catsear (Hypochaeris radicata)
• Celtuce (Lactuca sativa var. asparagina)
• Ceylon spinach (Basella alba)
• Chicory (Cichorium intybus)
• Chinese Mallow (Malva verticillata)
• Chrysanthemum (Chrysanthemum coronarium)
• Corn salad (Valerianella locusta)
• Cress (Lepidium sativum)
• Dandelion (Taraxacum officinale)
• Endive (Cichorium endivia)
• Epazote (Chenopodium ambrosioides)
• Fat hen (Chenopodium album)
• Fiddlehead (Pteridium aquilinum, Athyrium esculentum)
• Fluted pumpkin (Telfairia occidentalis)
• Golden samphire (Inula crithmoides)
• Good King Henry (Chenopodium bonus-henricus)
• Iceplant (Mesembryanthemum crystallinum)
• Kuka (Adansonia spp.)
• Lagos bologi (Talinum fruticosum)
• Land cress (Barbarea verna)
• Lettuce (Lactuca sativa)
• Lizard’s tail (Houttuynia cordata)
• Melokhia (Corchorus olitorius, Corchorus capsularis)
• Mustard (Sinapis alba)
• New Zealand Spinach (Tetragonia tetragonioides)
• Orache (Atriplex hortensis)
• Radicchio (Cichorium intybus)
• Samphire (Crithmum maritimum)
• Salad rape (Brassica napus)
• Sea beet (Beta vulgaris subsp. maritima)
• Seakale (Crambe maritima)
• Sierra Leone bologi (Crassocephalum spp.)
• Soko (Celosia argentea)
• Sorrel (Rumex acetosa)
• Spinach (Spinacia oleracea)
• Summer purslane (Portulaca oleracea)
• Swiss chard (Beta vulgaris subsp. cicla var. flavescens)
• Watercress (Nasturtium officinale)
• Water spinach (Ipomoea aquatica)
• Winter purslane (Claytonia perfoliata)

Fruiting and flowering vegetables

• Armenian cucumber (Cucumis melo Flexuosus group)
• Eggplant or Aubergine (Solanum melongena)
• Avocado (Persea americana)
• Bitter melon (Momordica charantia)
• Caigua (Cyclanthera pedata)
• Cayenne pepper (Capsicum frutescens)
• Chayote (Sechium edule)
• Chile pepper (Capsicum annuum Longum group)
• Cucumber (Cucumis sativus)
• Globe Artichoke (Cynara scolymus)
• Luffa (Luffa acutangula, Luffa aegyptiaca)
• Malabar gourd (Cucurbita ficifolia)
• Marrow (Cucurbita pepo)
• Parwal (Trichosanthes dioica)
• Perennial cucumber (Coccinia grandis)
• Pumpkin (Cucurbita maxima, Cucurbita pepo)
• Snake gourd (Trichosanthes cucumerina)
• Sweetcorn (Zea mays)
• Sweet pepper (Capsicum annuum Grossum group)
• Tinda (Praecitrullus fistulosus)
• Tomato (Lycopersicon esculentum)
• Tomatillo (Physalis ixocarpa, Physalis philadelphica)
• Watermelon (Citrullus lanatus)
• Winter melon (Benincasa hispida)
• West Indian gherkin (Cucumis anguria)
• Zucchini or Courgette (Cucurbita pepo)

Podded vegetables

• American groundnut (Apios americana)
• Azuki bean (Vigna angularis)
• Black-eyed pea (Vigna unguiculata subsp. unguiculata)
• Chickpea (Cicer arietinum)
• Drumstick (Moringa oleifera)
• Dolichos bean (Lablab purpureus)
• Fava bean (Vicia faba)
• French bean (Phaseolus vulgaris)
• Guar (Cyamopsis tetragonoloba)
• Horse gram (Macrotyloma uniflorum)
• Indian pea (Lathyrus sativus)
• Lentil (Lens culinaris)
• Lima bean (Phaseolus lunatus)
• Moth bean (Vigna acontifolia)
• Mung bean (Vigna radiata)
• Okra (Abelmoschus esculentus)
• Pea (Pisum sativum)
• Peanut (Arachis hypogaea)
• Pigeon pea (Cajanus cajan)
• Rice bean (Vigna umbellatta)
• Runner bean (Phaseolus coccineus)
• Soybean (Glycine max)
• Tarwi (Lupinus mutabilis)
• Tepary bean (Phaseolus acutifolius)
• Urad bean (Vigna mungo)
• Velvet bean (Mucuna pruriens)
• Winged bean (Psophocarpus tetragonolobus)
• Yardlong bean (Vigna unguiculata subsp. sesquipedalis)

Bulb and stem vegetables

• Asparagus (Asparagus officinalis)
• Cardoon (Cynara cardunculus)
• Celeriac (Apium graveolens var. rapaceum)
• Celery (Apium graveolens)
• Elephant Garlic (Allium ampeloprasum var. ampeloprasum)
• Florence fennel (Foeniculum vulgare var. dulce)
• Garlic (Allium sativum)
• Kohlrabi (Brassica oleracea Gongylodes group)
• Kurrat (Allium ampeloprasum var. kurrat)
• Leek (Allium porrum)
• Nopal (Opuntia ficus-indica)
• Onion (Allium cepa)
• Prussian asparagus (Ornithogalum pyrenaicum)
• Rhubarb (Rheum x cultorum)
• Shallot (Allium cepa Aggregatum group)
• Welsh onion (Allium fistulosum)
• Wild leek (Allium tricoccum)

Root and tuberous vegetables

• Ahipa (Pachyrhizus ahipa)
• Arracacha (Arracacia xanthorrhiza))
• Bamboo shoot
• Beetroot (Beta vulgaris subsp. vulgaris)
• Black cumin (Bunium persicum)
• Broadleaf arrowhead (Sagittaria latifolia)
• Canna (Canna spp.)
• Carrot (Daucus carota)
• Cassava (Manihot esculenta)
• Chinese artichoke (Stachys affinis)
• Daikon (Raphanus sativus Longipinnatus group)
• Earthnut pea (Lathyrus tuberosus)
• Ensete (Ensete ventricosum)
• Ginger (Zingiber officinale)
• Gobo (Arctium lappa)
• Hamburg parsley (Petroselinum crispum var. tuberosum)
• Jerusalem artichoke (Helianthus tuberosus)
• Jícama (Pachyrhizus erosus)
• Lotus root (Nelumbo nucifera)
• Maca (Lepidium meyenii)
• Malanga (Xanthosoma sp.)
• Mashua (Tropaeolum tuberosum)
• Mauka (Mirabilis extensa)
• New Zealand rock lily (Arthropodium cirratum)
• Oca (Oxalis tuberosa)
• Parsnip (Pastinaca sativa)
• Pignut (Conopodium majus)
• Plectranthus (Plectranthus spp.)
• Potato (Solanum tuberosum)
• Prairie turnip (Psoralea esculenta)
• Radish (Raphanus sativus)
• Rutabaga (Brassica napus Napobrassica group)
• Salsify (Tragopogon porrifolius)
• Scorzonera (Scorzonera hispanica)
• Skirret (Sium sisarum)
• Taro (Colocasia esculenta)
• Ti (Cordyline fruticosa)
• Tigernut (Cyperus esculentus)
• Turnip (Brassica rapa Rapifera group)
• Ulluco (Ullucus tuberosus)
• Wasabi (Wasabia japonica)
• Water chestnut (Eleocharis dulcis)
• Yacón (Smallanthus sonchifolius)
• Yam (Dioscorea spp.)