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How important is cleanliness!
Posted 12 October 2010 - 11:04 AM
Posted 12 October 2010 - 01:08 PM
Hey. I was lucky enough this week to visit a commercial outdoor hydroponic farm. The guy grows top quality herbs for 5 star chefs and flowers for garden show's etc. He grew primarily in an NFT setup but was switching to coco. Now one thing i noticed is that he had algae growing in all the channels and around the drainage pipes. I didn't wanna say anything as i thought it might be a little rude but this goes against my whole beleif that everything must be kept surgically clean. Is this the case or because he's growing outdoors is it ok to lapse on the cleanliness'
Its all about ph and algae is bad. Will clog shit, eat your nutrients, etc...
Edited by Tommatt, 12 October 2010 - 09:07 PM.
Posted 12 October 2010 - 01:31 PM
Posted 12 October 2010 - 01:41 PM
Nutrients + Light = Algae + Oxygen
Algae + Oxygen + Nutrients = Less Nutrients + More Algae
One of the reason I gave up on flat-bed ebb & flow was fighting the algae battle.
A "healthy" algae colony will suck down CO2 like a sponge while it is getting light.
Removal of CO2 from water causes pH to rise.
Turn the lights out and CO2 rises and pH falls.
In NFT and DWC systems there is not a whole lot of opportunity for sunlight to get into the reservoir but once the algae is there the added oxygen will keep it alive and eating nutrients.
The only way to keep on top of algae is to keep it clean (and keep the sunlight out).
So cleanliness is a good mantra...
Posted 13 October 2010 - 07:31 PM
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