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  Topic Review (Newest First)
04-15-2010 03:47 PM
Wasserpest In that particular thread the OP mentioned that the Fishmate's bottomless compartments did not work for this purpose. It was replaced with the Pentair Lifegard.
04-15-2010 04:26 AM
Fishstein
Anyone know best system for auto dry fert dosing?

Saw the Fishmate thread - mentioned Lifeguard auto feeder. But that looks like it works with one large hopper - so how does it dose the same reliable amount of dry ferts every day?

What do you recommend?
12-01-2009 12:52 AM
Wasserpest Did you check out the link I pm'd you? That's where the Fishmate for Autodosing is discussed.

http://www.plantedtank.net/forums/eq...ing-cheap.html
11-30-2009 08:35 PM
Chasintrades http://www.drsfostersmith.com/produc...43&pcatid=4443

Has anyone had any success in utilizing this product for auto dosing of dry ferts?

In the product description it states...
Airline hookup will allow use under even the most humid conditions

Would love to know if this has been tried. For $29.99 to buy this, and the fact that I already have an air pump and tubing ($0 more investment) -I would be willing to guinea pig this. Just wondering if anyone has tried this product.
08-11-2009 05:05 PM
Wasserpest Bill, there is a bit of discussion at the water pump thread.

I tried Excel, but didn't notice a difference. Possible that the concentration needed to be higher. Omitting KH2PO4 from the NPK mix really helped to prevent the smell that otherwise developed.
08-11-2009 04:28 PM
plantbrain Excel works also in place of HCL.

Regards,
Tom Barr
08-11-2009 02:36 AM
billb Is there a good thread that discusses best ways to make stable solutions for autodosing? I have heard that people add HCl to the micronutrients to keep things from growing in the bottles and/or provide stability to the chelated iron? Is there any need to add a stabilizer to the NPK solution?


Thanks for your help

Bill
07-20-2009 07:43 PM
Wasserpest You are welcome, thanks for the friendly bump.

Last night I set up some auto test-tube fertilizing for my 135gal garage tank. Took two 6ml and one 3ml oral syringe (N & K and the smaller one for P), filled them with the powders, ziptie around them, and through a suction cup to stick them to the glass.

Just need to monitor a few weeks the rate in which the various powders dissolve. This must be the simplest way to automate fert dosing.
07-20-2009 07:16 PM
lopez_316us
Thank you!

Wow! How I didn't see the before...

Really helpfull~~~!!!!

Thanks
05-30-2007 12:27 PM
Gatekeeper
Quote:
Originally Posted by SuRje1976 View Post
There is, in my opinion, NO need to spend the extra $$$ on the variable flow pumps.

Great thread!
And this coming from a guy who is not afraid to spend $$$ on techy devices....

I almost fell over when I read this. Had to re-read this a few times for it to digest...lol.
05-30-2007 03:59 AM
SuRje1976
Quote:
Originally Posted by Betowess View Post
Congrats on the sticky. I remember reading somethin Sergio said about getting the flow at the rated amount if the peristatic is set for full output. But if you opt for a variable flow unit, the ouput was not as consistent when setting the speeds. So the long and short, don't order a variable output, just use a timer or dilution to get one's desired ferts in the tank and use a one speed (flow) unit.
That's exactly right. I had a bit of an issue with getting repeatability with the variable flow pumps the further I deviated from full throttle. SO, I run them at full throttle and adjust the time they run for instead. Pretty simple to do with the timers I'm using (X10 macros), but if you are using a timer that is adjustable in increments of minutes, etc, you'd just need to adjust the concentrations of your stock solutions accordingly. There is, in my opinion, NO need to spend the extra $$$ on the variable flow pumps.

Great thread!
05-10-2007 06:29 AM
Betowess Congrats on the sticky. I remember reading somethin Sergio said about getting the flow at the rated amount if the peristatic is set for full output. But if you opt for a variable flow unit, the ouput was not as consistent when setting the speeds. So the long and short, don't order a variable output, just use a timer or dilution to get one's desired ferts in the tank and use a one speed (flow) unit.
05-08-2007 11:33 PM
scolley Hey, great work WP! It's too late... but I still want to throw in a vote for sticky too! Really!

This is an outstanding starting point for someone considering autodosing. And for those of us that is has been successful for, that can make this hobby a whole lot easier.

Great job!
05-08-2007 05:42 PM
Naja002 Thanx! I haven't received my pumps yet, but I did just pick up some medical grade 02 tubing, bubble counters, tank and a couple of regulators from a landlord that rents the place behind me--all Free. Now I just need a prescription to get the tanks filled. Anyway! the 02 tubing looks like a smaller diameter, so it may work. Don't really like the fact that its clear, but we'll see how it goes.

The solution can be diluted if it pumps too much or too little by adjusting the cycle time. In the end--its all about getting x-amount into the tank. Mine are estimated to run 1.5ml/min. At 0.25ml/min I think You've got a large margin of error!
05-08-2007 05:33 PM
Wasserpest I had some Norprene-like tubing from a friendly fellow member, as well as the usual air "Mini tubing". It fits alright, since there is no pressure involved it doesn't have to be extremely tight.

Diluting would be necessary if they pump too much, that's correct. I want to dose concentrated solutions, I think they don't degrade as fast as diluted ones.
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