[GFP] Double SS400W Grow Journal

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Re: [GFP] Double SS400W Grow Journal

Postby SisterMaryElephant » Fri Apr 05, 2013 4:42 pm

Then you set it up wrong.

You could have ran the chiller to the cooling res and another pump on a thermostat for the nutrient loop. That way you maintain the cooling res at a colder temp than the nute res.

You still should have gotten a bigger chiller though even if you don't see why yet... :D
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
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Re: [GFP] Double SS400W Grow Journal

Postby FCGFrank » Fri Apr 05, 2013 4:48 pm

SisterMaryElephant wrote:Then you set it up wrong.

You could have ran the chiller to the cooling res and another pump on a thermostat for the nutrient loop. That way you maintain the cooling res at a colder themp than the nute res.


OK, that is an option, or I could have gotten the 8" icebox model instead of the 6" (2500 more BTU of heat dissipation due to the bigger surface area) but then I would have needed another pump + thermostat, whereas I could, so far, run it all with a single pump. The HI documentation suggested a 10F would be enough, so I had planned accordingly. Even 20F isn't enough in my case, I suspect because of the lack of surface for the air exchange since everything is so crammed together. I also did not place my fan ideally.

SisterMaryElephant wrote:You still should have gotten a bigger chiller though... :D


Yeah, but since now I realize to be practical I would have needed two chillers anyway, the mistake is not that costly after all.

Once I have multiple enclosures, I can run all the cooling coils for all rdwc res on this chiller on its own res, and a separate loop and cooling res for the lights.

The moral is I should have gotten the 1/4 hp first and 1/10 hp second, not the other way around. It's pure luck it'll work out. It's too bad you can't trust the documentation of manufacturers.
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Re: [GFP] Double SS400W Grow Journal

Postby SisterMaryElephant » Fri Apr 05, 2013 4:51 pm

I'll say it again and for the last time, when you add more lights and realize that the 1/4 + 1/10 still isn't enough, maybe you'll remember this conversation...but you're the expert. :D
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
Posts: 2633
Joined: Thu Sep 22, 2011 10:05 pm

Re: [GFP] Double SS400W Grow Journal

Postby FCGFrank » Fri Apr 05, 2013 4:53 pm

SisterMaryElephant wrote:I'll say it again and for the last time, when you add more lights and realize that the 1/4 + 1/10 still isn't enough, maybe you'll remember this conversation...but you're the expert. :D


1/4 wont be enough for all lights but JBJ doesnt make anything bigger than 1/2 on 120V and I wont be able to run 230V after all, and the 1/2 hp is almost twice the price of the 1/4, so there's no real savings to be had, even in power (1 amp difference between running two of their 1/4 or a single 1/2)

I can serialize two or three 1/4 hp chillers if I want, so long the pump can push the water.

I should also note JBJ's 1/4 chiller has the same BTU dissipation as Hydrofarm's 1/2hp, so it's really more like a 1/2 hp Im getting.
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Re: [GFP] Double SS400W Grow Journal

Postby SisterMaryElephant » Fri Apr 05, 2013 4:57 pm

I'm done arguing about it, you don't have to believe me, it's your grow...
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
Posts: 2633
Joined: Thu Sep 22, 2011 10:05 pm

Re: [GFP] Double SS400W Grow Journal

Postby FCGFrank » Fri Apr 05, 2013 5:00 pm

SisterMaryElephant wrote:I'm done arguing about it, you don't have to believe me, it's your grow...


You're saying 1/4 won't be enough for all the lights I planned, I'm saying I agree with you but that it can be remedied by serializing multiple chillers. The bigger chillers (1HP, 1.5 AND 2HP) run on 220V which I can't get after all where I will be. Not currently anyway.
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Re: [GFP] Double SS400W Grow Journal

Postby SisterMaryElephant » Fri Apr 05, 2013 5:02 pm

I'm not going to go over the 240/120 discussion again either, make sure you don't overload your service panel...
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
Posts: 2633
Joined: Thu Sep 22, 2011 10:05 pm

Re: [GFP] Double SS400W Grow Journal

Postby FCGFrank » Fri Apr 05, 2013 5:04 pm

SisterMaryElephant wrote:I'm not going to go over the 240/120 discussion again either, make sure you don't overload your service panel...


I've got 60A free, with a 20A on reserve, so 80A total.

Obviously it's not ideal but I have to make due with what I have.

I was going to install a single extra 220v breaker so I could run a 2hp commercial chiller but apparently it's against the civil engineering code in the area. :evil:
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Re: [GFP] Double SS400W Grow Journal

Postby SisterMaryElephant » Fri Apr 05, 2013 5:11 pm

I know we all have to make due with what we have but you don't want to be tripping breakers or, God forbid, have a fire so be careful...
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
Posts: 2633
Joined: Thu Sep 22, 2011 10:05 pm

Re: [GFP] Double SS400W Grow Journal

Postby FCGFrank » Fri Apr 05, 2013 5:13 pm

SisterMaryElephant wrote:I know we all have to make due with what we have but you don't want to be tripping breakers or, God forbid, have a fire so be careful...


a 1000w hid pulls about 1100w with the ballast, I read?

if so, 60A should be more than enough, but I'll have multiple UPS to regulate the power so if something trips, the UPS will trip before the breaker. Plus if there's a power failure it gives you time to shut down everything safely. :)
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