First DWC "Cloner" Tips?

Here’s my cheapo setup…under $15…don’t let the size fool you, I’ve rooted well over 4K cuttings on this shelf for the past 18yrs…

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What about water temperature does that matter much?

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Yes it does, I usually have my cloners around 75 degrees…there is actually a heating mat under my cloners…I have a upside down metal lasagna pan under my clear cloner and the black cloner is only half way on the heating mat…Hope this helps.

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I run at 80°f but at that temp you can get algea pretty quick if its not sterile. I use a fish tank heater I got off Amazon, works great, set it and forget it, shuts off when water gets to temp and fires back up when it starts cooling down