http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=filter-advice-please-help-#1 Hi, First time have aquarium 33GL: 1. What filter should I buy (internal/external, brand)? 2. What heater should I buy (with or without thermo)? Your advices are very appreciated. khanhnguyen99 2009-10-09 http://forum.aqua-fish.net/?topic=filter-advice-please-help-#2 Hey if you ever need advice check out my site at http://fishtankadvice.com I can personally give you advice. vhypio 2009-10-15 http://forum.aqua-fish.net/?topic=filter-advice-please-help-#3 for a 33 gallon tank you can still use an internal filter, there are external filters rated for that tank if you want to keep the equipment hidden. You will probably need a 100 watt heater and a reliable thermometer to attach to the tank mickey 2009-10-27 http://forum.aqua-fish.net/?topic=filter-advice-please-help-#4 Thank you very much for your advice. I got 40i internal filter and 100W heater. The water is quite clear and the fishes are doing well. khanhnguyen99 2009-10-27 http://forum.aqua-fish.net/?topic=filter-advice-please-help-#5 Not a problem, if you need any more advice feel free to check out my site, just click the link on my signature mickey 2009-10-28 http://forum.aqua-fish.net/?topic=filter-advice-please-help-#6 Hi! first time with aquarium, small one, with air filter but no air pump yet. when do i turn the filter on? or should it be on the whole time? tnx jangt 2011-01-17