I too used the BioDome and sponges last year and the sponges left a lot to be disired. The Bio Dome Seed-Starting System makes growing plants from seed easy, economical, and fun for the entire family! I appreciate the help! I have kept zinnias in this medium with open biodome for weeks while I waited to see how various flowers would thrive in the garden and then replace in the bed as some planted weak plants faultered. You could use Miracle gro seed starting mix (not potting mix) as a substitute for the pellets. Park Seed. The secret to the Bio Dome's success is rooted in the science of botany — you control the optimum climate. Wish I could find white foam floaters and inserts in the larger size that would fit my bio dome, though. Bio Sponges are now enriched with oilseed extract, giving your seedlings an extra boost of nutrition. All you have to do is snip a little off the bottom of the pod before putting it in the cage. A good spray down with a 1 to 10 mix of bleach and water followed by a good rinse in clean water should do the trick.Hope this helps. 10 things to consider if you’re thinking of downsizing — way down, It's invasive, a nonnative and a poor insect magnet. You water the base of this tray, NOT the bio sponges themselves. The biodome and similar designs are intended to be bottom watered. I don't know the size of the 60 or 18 plug systems, but I presume this would work with them also, you would just have to move the cut on the bat either more towards one end or the other and you will need to figure out what dimensions your paper should be cut to.BTW...if you take the part of the bat that was cut off and not used and grind or wittle it to a point, it makes a damn fine dibble for smaller seedlings or seeds.As for those of you that have a fungus problem, remember, fungi are notoriously omnipresent in the air and any device used for seedlings should be sanitized in prep for planting to avoid or delay the onset of fungal problems (Just like brewing beer, my personal preference). 57% success by 125 votes . Everything I planted in seedling mix this year is now up, including peppers that often take forever, and growing well under the grow light. … I am thinking of paper, rolled into a cone filled with potting mix. Evidently this worked and/or stimulated root growth because all transplanted and grew well. So ultraviolet lights should be the best light to use for the lettuce . Sad to hear they are not breaking down.....I think their lit claims they are better than peat pots which don't break down completely....oh well. I did cancel my order of the plugs/sponges, no questions asked. Perhaps you can try that and let me know how you like it. I've been thinking about it myself as I have not liked the results I've gotten from my transplanted starts this year. Park Seed 80 Pack Refill Sponges for The 40-Cell Planting Block. I talked the wife into a trial run comparison of the sponges to the cups that we made and we will see if there is any rooting differences. The Aerogarden sponges are made of Canadian Spagnum peat. I am afraid they may be backordered and haven't told me yet. :). Without getting the plugs, I probably can't use my Bio Domes, so I'm looking for surefire ideas to start my veggies and a few flowers. Your discount: 20% Off. These things are invariably a waste of time and a foil to separate gullible and concerned gardeners from their funds. First time user of the Bio Domes and the growing of petunias. 12k followers. Bio Dome Refill Sponges. This year I used seedling mix and my first tomatoes are up. Purple are best lights, give off the best wave length Red is the worst wave length for plants. BioDome Plus Light and Heat Kit: Contains a BioDome with 60-cell tray, seedling fertilizer, a heat mat, and a tabletop plant light. Bio Dome Refill Sponges connor graham. Now the cup should be seated in the bottom, spread out and ready for seed starter soil. Has anyone found a supplier of the sponges? This helps roots develop more strongly, and makes transplanting even easier! Greenhouse Plants. Black $59.95 View Product Good Dirt® Outdoor Potting Mix. Keep your Windowsill Bio Dome germinating and growing merrily year-round with these refills of the Bio Sponges! But if you firm the potting medium into the cells - and that's a potting medium with a lot of peat or coir in it - it shouldn't "wash out" unless you are watering over-vigorously. Would it be wise to cut some cheesecloth or even gauze to line the holes and then fill in with potting mix? Feb 21, 2019 - Order bio dome refill sponges for your bio dome planting block. Jan 7, 2014 - Order bio dome refill sponges for your bio dome planting block. I use the humongous size sponge and algae has no desire to grow there(at least if it does, it is not visible and there is no slimy indication), even though openly exposed to direct light bulbs. I have every size of biodome, the 60, 40, and 18 cell floats, and lots of single and double trays and domes. Park Seed Receive 20% Discount Select Seed Starting Supplies Or More Free 121 Refill Sponges When You Purchase 60 Cell Bio Dome. 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