colin, for what i saw from friends who used fine lava-type sand in their tank i would really avoid that. when fish are scared or fight they move fast and sometime hurt the sand, scratch their body on it and get injuries which get infected. Plus fish like corydoras would completelt damage their mouth (cf little barb stuff hanging in both sides of the mouth): it looks weired after! This kind of soil is good so when speaking about biological action as they will contain a use population of bacteria. As you've mentionned, this lava-sand is also very light and moves around with flow. if you use any syphon system to clean the extra crap bulding up in the tank, that might be an issue to. anywooo... my 2 centimes! take care Yvan Alleau 712 NW Kings Blvd Corvallis, OR 97330 College of Oceanic and Atmospheric Sciences Oregon State University office (Burt 222): 737-3649, to be used wisely! home: 738-0606 PLEASE NOTE NEW E-MAIL ADDRESS: yalleau@coas.oregonstate.edu "When you're far from everything, you're getting closer to the essential" -----Original Message----- From: owner-apisto@admin.listbox.com [mailto:owner-apisto@admin.listbox.com]On Behalf Of Colin Gorton Sent: Tuesday, February 26, 2002 7:00 AM To: apisto@listbox.com Subject: Re: sand vs gravel I'm going to be using volcanic "sand" for my 1000 gallon "Monster Tank" project 'cos I'm not far from a volcanic (extinct) area. This varies in size from less than 1mm to around 5mm in sie, the only `problem is that it's a bit light and gets "blown" around a bit if the current is too strong, you also need more of it to hold down plants:-(. I'll be getting about 3 sack fulls :-0. C:-)lin -----Original Message----- From: "Ed Pon" <edpon@hotmail.com> Date: Tue, 26 Feb 2002 14:49:38 To: apisto@majordomo.pobox.com Subject: sand vs gravel Re: Rather than using sand or gravel, I usually go to the rock quarry or garden Re: supply shop and get 60lb bags of #2 sand. I think playground sand is #0 or Re: #1. Playground sand is too fine and "packs", causing dead spots (no oxygen Re: zones). #2 sand seems to be the right size for apistos to move around Re: easily. Re: Re: Re: Re: Re: Ed Pon Re: Milpitas, California 95035 Re: Re: Re: _________________________________________________________________ Re: Chat with friends online, try MSN Messenger: http://messenger.msn.com Re: Re: Re: ------------------------------------------------------------------------ - Re: This is the apistogramma mailing list, apisto@listbox.com. Re: For instructions on how to subscribe or unsubscribe or get help, Re: email apisto-request@listbox.com. Re: -- C:-)lin They said "Smile, things could be worse." So I smiled, and sure enough... _______________________________________________ Get your free email from http://www.graffiti.net Powered by Outblaze ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com.