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Forum: Equipment   03-19-2011, 01:34 AM
Replies: 13
Views: 914
Posted By PDX-PLT
I have a 300W Hydor inline on my 90 gallon discus...

I have a 300W Hydor inline on my 90 gallon discus tank, and it has no problem keeping the temperature at 84 F.

I have a closed top, though. Tanks with open tops need much bigger heaters to...
Forum: The Lounge & Introductions   08-26-2010, 06:45 PM
Replies: 29
Views: 1,469
Posted By PDX-PLT
Nice pics. I must say, though, that I'm a bit...

Nice pics. I must say, though, that I'm a bit "put off" by that place now. My 12-year old said it best, "Dad, around every corner they're trying to tell you what a bad person you are". I agree;...
Forum: DIY   06-29-2010, 09:06 AM
Replies: 15
Views: 3,027
Posted By PDX-PLT
Asbestos was never used to treat wood. In a...

Asbestos was never used to treat wood. In a USA, a chemical mixture called CCA contains arsenic, and used to be widely used in residential applications, until it was removed from the residential...
Forum: Equipment   06-25-2010, 05:48 PM
Replies: 8
Views: 4,540
Posted By PDX-PLT
Yes, the National Electric Code states that...

Yes, the National Electric Code states that extension cords may only be used on a temporary basis. The main reason is they tend to be abused, and then become a hazard. People run them under...
Forum: DIY   06-25-2010, 01:14 AM
Replies: 16
Views: 1,393
Posted By PDX-PLT
Paint makes a fine sealer (that's why we paint...

Paint makes a fine sealer (that's why we paint our houses, after all). However, flat is a very poor choice: it has very little of the binders they put in paint, which is what gives paint its...
Forum: Equipment   05-10-2010, 11:29 PM
Replies: 279
Views: 82,053
Posted By PDX-PLT
How does a heater that's submerged in water melt...

How does a heater that's submerged in water melt through the casing?
Forum: Equipment   04-20-2010, 06:10 PM
Replies: 14
Views: 1,069
Posted By PDX-PLT
Just by contact with the air on the tank's...

Just by contact with the air on the tank's surface, the tank water is going to absorb all the atmospheric CO2 it's capable of absorbing. There's an equilibrium level of dissolved CO2 in the water,...
Forum: Equipment   04-20-2010, 08:19 AM
Replies: 6
Views: 657
Posted By PDX-PLT
I believe that's what he's talking about. I...

I believe that's what he's talking about. I don't think the term GFCI is used much outside of North America.
Forum: DIY   04-16-2010, 12:27 AM
Replies: 19
Views: 1,931
Posted By PDX-PLT
The reflector doesn't have to be grounded, but it...

The reflector doesn't have to be grounded, but it tends to make starting more reliable.
Forum: DIY   04-14-2010, 12:44 AM
Replies: 19
Views: 1,931
Posted By PDX-PLT
Maybe. There might be difficulty in starting the...

Maybe. There might be difficulty in starting the bulb. Reliable starting depends on a grounded reflector, and low inductance (short) connection to the bulb from the ballast.
Forum: Equipment   04-02-2010, 07:33 PM
Replies: 6
Views: 755
Posted By PDX-PLT
132 GPH flow seems very high for a 5W lamp. I...

132 GPH flow seems very high for a 5W lamp. I suspect the algae isn't being irradiated enough to do anything. For $30, ya get what ya pay for, I guess.
Forum: Equipment   03-19-2010, 12:55 AM
Replies: 31
Views: 2,654
Posted By PDX-PLT
I'm beginning to think that one way to...

I'm beginning to think that one way to dramatically improve heater reliability is to go "old school", and not submerge the tops of these "submersible" heaters.
Forum: Equipment   03-17-2010, 01:20 AM
Replies: 10
Views: 2,052
Posted By PDX-PLT
If they get clogged, you just poke some more...

If they get clogged, you just poke some more holes in them with a needle.
Forum: Equipment   03-16-2010, 08:22 AM
Replies: 31
Views: 2,654
Posted By PDX-PLT
You can find a couple of pics on this thread...

You can find a couple of pics on this thread (http://www.plantedtank.net/forums/diy/50732-my-automatic-water-changer-system-concept-2.html).

Keep it vertical.
Forum: Equipment   03-13-2010, 01:26 AM
Replies: 8
Views: 1,143
Posted By PDX-PLT
You can buy inline heater enclosures in which you...

You can buy inline heater enclosures in which you can install thermostat-less heaters. One thing to watch out is, unlike the Hydors, they have no fail-safe against overheating if the flow through...
Forum: Equipment   03-09-2010, 07:27 PM
Replies: 279
Views: 82,053
Posted By PDX-PLT
I think most would agree that, of all the...

I think most would agree that, of all the components in an aquarium system, the heaters have proved to be the least reliable. The bimetals are the main culprit. Due to very tight size constraints,...
Forum: Equipment   03-04-2010, 06:20 PM
Replies: 279
Views: 82,053
Posted By PDX-PLT
No, spoken like an electrical engineer, who has...

No, spoken like an electrical engineer, who has the expertise to understand how badly these things are engineered.

Who also drives a 15-yr. old Ford pickup, BTW, that gets me around just fine.
...
Forum: Equipment   03-04-2010, 07:34 AM
Replies: 279
Views: 82,053
Posted By PDX-PLT
Read aquarium forums long enough, and you'll see...

Read aquarium forums long enough, and you'll see threads to the effect of "don't buy these heaters, they're junk" for just about every model of submersible, <$30 heaters. Why? Because you get what...
Forum: Equipment   02-21-2010, 06:51 PM
Replies: 1
Views: 618
Posted By PDX-PLT
Get the 3/4" FPT unit, and get a couple of 3/4"...

Get the 3/4" FPT unit, and get a couple of 3/4" MPT to 1/2" barbed adapters. Ace hardware should have them; probably Home Depot too.
Forum: Equipment   02-17-2010, 07:03 PM
Replies: 2
Views: 420
Posted By PDX-PLT
Here:...

Here: http://www.tapplastics.com/shop/product.php?pid=141&
Forum: DIY   02-17-2010, 06:11 PM
Replies: 14
Views: 3,716
Posted By PDX-PLT
Yes, which is why they tend to be failure-prone:...

Yes, which is why they tend to be failure-prone: the same element used for temperature sensing (the bimetal strip) is also used to turn current on/off to the high-power heater element. Better (more...
Forum: DIY   02-16-2010, 07:34 PM
Replies: 40
Views: 7,165
Posted By PDX-PLT
No, it's also available in a PDIP through-hole...

No, it's also available in a PDIP through-hole package (the "NT" suffix).
Forum: Shrimp & Other Invertebrates   02-14-2010, 12:46 AM
Replies: 30
Views: 2,825
Posted By PDX-PLT
Considering that a significant portion of the...

Considering that a significant portion of the economy of Maine depends on harvesting a native crustacean (ocean lobster), I can understand their desire to err on the side of (abundant) caution. ...
Forum: DIY   02-14-2010, 12:26 AM
Replies: 20
Views: 30,774
Posted By PDX-PLT
Yea, I think you have to now. :proud:

Yea, I think you have to now. :proud:
Forum: DIY   02-14-2010, 12:20 AM
Replies: 15
Views: 6,164
Posted By PDX-PLT
Great idea for an aquascaping material; thanks. ...

Great idea for an aquascaping material; thanks.

BTW, "old school" aquariums (the type that had when I was a kid, with stainless steel frames and glass set in black gunk) used slate for the bottom...
Showing results 1 to 25 of 250

 
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