Step 9:

Every 15 days change completly the nutrient solution with a deep cleaning of the tank with Atami Ataclean to remove molds, algae and saline deposits.
@Mikkau &ndash; for a natural Rockwool the pH level is 7.0. Glad that you asked since any misinformation misunderstanding over the pH is an important issue; that I think needs to be addressed with a greater depth. Check out what the famous hydroponic growing expert, Deonna Marie; has to say about the importance of<a href="http://www.rosebudmag.com/hydro-pop/music-entertainment/hyperspace-hotties-the-most-beautiful-babes-in-sci-fi-today" rel="nofollow"> pH levels </a>in a hydroponic grow system.
<a href="http://bigbudsmag.com/grow/article/marijuana-growing-hydroponics-nutrients-stores-canna" rel="nofollow">Hydroponic Store</a> - This is a simple kit for growing with a new advanced technique and I am loving it. <br>
Anyone use led grow light? How good are they? Can you use them on&nbsp;this hydroponics grow it system?<br />
Check out <a href="http://dabblings.net/?page_id=25" rel="nofollow">http://dabblings.net/?page_id=25</a> for results using DIY LED lights. I've tried Red, Blue, and White, they all appear to work just as well. The main thing to keep in mind is that if you're starting from seed, keep the light real close to the seedlings (about an inch above), otherwise they'll grow real spindly and keel over.
Hi, <br>I have found: <br>http://www.hydroponics.eu/lighting-c-24/lamps-led-s-298
They look nice - but I find them rather expensive for the States. If you go to <a href="http://www.squidoo.com/LED-growlight">http://www.squidoo.com/LED-growlight</a> you can find kits that are less expensive by far. If you don't like soldering, you can find ready made kits as well. Since you appear to live in Europe, with VAT taxes, etc. your source may turn out to be cheaper. Thanks for sharing the resource!
The plant roots have unrestricted access to oxygen, water and nutrients ?
any idea?
what is natural rockwool pH level?
has any on ever tried this with coconut fiber?
Cool..I can't wait..

About This Instructable



Bio: Hydroponics growshop offering a huge selection of indoor growing grow light, growbox, hydroponic grow systems, plant growing, hydro and organic horticultural supplies and other grow-room ... More »
More by hydroponicsgrowshop:hydroponics grow kits - Grow it 
Add instructable to: